C06B 23/00 - Compositions caractérisées par des constituants non explosifs ou non thermiques
C08G 83/00 - Composés macromoléculaires non prévus dans les groupes
C06B 27/00 - Compositions contenant un métal, le bore, le silicium, le sélénium ou le tellure ou leurs mélanges, intercomposés ou hydrures avec des hydrocarbures ou des hydrocarbures halogénés
2.
PHOTOCURABLE AND COMBUSTIBLE POLYMER AND USE THEREOF
A photocurable and combustible polymer. The polymer comprises an energetic prepolymer, a diluent and a photo-initiator, wherein the energetic prepolymer is one of or a mixture of two of acrylate-terminated poly3-nitrate methyl-3-methyloxetane and acrylate-terminated polyglycidyl ether nitrate. The photocurable and combustible polymer has an energetic group, i.e. a nitrate group, which can be subjected to self-sustaining combustion in an oxygen-free environment, and the polymer can be used to prepare combustible components and parts such as combustible ordnance components and parts.
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
C08F 220/18 - Esters des alcools ou des phénols monohydriques des phénols ou des alcools contenant plusieurs atomes de carbone avec l'acide acrylique ou l'acide méthacrylique
C08F 2/48 - Polymérisation amorcée par énergie ondulatoire ou par rayonnement corpusculaire par la lumière ultraviolette ou visible
3.
Liquid crystal (LC) composition with extremely-low dielectric loss and high-frequency component including same
Disclosed are a liquid crystal (LC) composition and a high-frequency component including the same. The LC composition includes one or more selected from compounds shown in structural formula (I) and one or more selected from compounds shown in structural formula (II):
3 is methyl or chlorine, and the other two are hydrogen; k, m, n, and p are 0 or 1; and ring A is selected from a benzene ring, cyclohexane, and cyclohexene;
3 each are selected from alkyl with 1 to 10 carbon atoms, alkenyl with 2 to 10 carbon atoms, fluorinated alkyl, fluorinated alkenyl, cycloalkyl, halogen, and NCS; and ring A and ring B each are selected from a benzene ring, cyclohexane, and cyclohexene.
G02F 1/1333 - Dispositions relatives à la structure
C09K 19/12 - Composés non stéroïdes formant des cristaux liquides contenant au moins deux cycles non condensés contenant au moins deux cycles benzéniques au moins deux cycles benzéniques directement liés, p. ex. biphényles
C09K 19/18 - Composés non stéroïdes formant des cristaux liquides contenant au moins deux cycles non condensés contenant au moins deux cycles benzéniques liés par une chaîne carbonée la chaîne contenant des liaisons triples carbone-carbone, p. ex. tolanes
C09K 19/30 - Composés non stéroïdes formant des cristaux liquides contenant au moins deux cycles non condensés contenant des cycles non aromatiques saturés ou insaturés, p. ex. cycle cyclohexanique
4.
APPARATUS AND METHOD FOR ACOUSTIC RESONANCE ENHANCED CHEMICAL REACTION
Disclosed in the present invention is a method for an acoustic resonance enhanced chemical reaction, comprising: step 1, adding reaction material components into a reactor, the reactor being fixed on an acoustic resonance reaction platform; step 2, by means of the phase difference, adjusting the acceleration G of the acoustic resonance reaction platform, and performing frequency sweep in the low frequency range to determine that the frequency corresponding to peak value acceleration G is the resonance frequency; step 3, reacting the reaction material components under the conditions of the resonance frequency and a set acceleration G1, and sequentially filtering, and drying, and heat drying the suspension obtained from the reaction, so as to obtain a reaction product; wherein the acceleration G and the acceleration G1 are all fixed values, the value range is 1g ≤ G ≤ 90g, 1g ≤ G1 ≤ 90g, G is the gravity acceleration, and the value is 9.8 m/s 2. The method in the present invention is suitable for various reaction systems including gas-liquid, liquid-liquid, solid-liquid and heat-release systems, has mild reaction conditions, and is particularly suitable for the synthesis of dangerous chemicals with high sensitivity to mechanical stimulation.
B01J 19/10 - Procédés utilisant l'application directe de l'énergie ondulatoire ou électrique, ou un rayonnement particulaireAppareils à cet usage utilisant des vibrations de fréquences audibles ou des ultrasons
5.
Catalyst for preparing 2,3,3,3,-tetrafluoropropene by gas-phase hydrodechlorination
Disclosed is a catalyst for preparing 2,3,3,3-tetrafluoropropene by gas-phase hydrodechlorination, which solves the problem of the high costs and easy deactivation of traditional chlorofluorocarbon hydrodechlorination catalysts. The disclosed catalyst is characterized in consisting of an active component and a carrier, wherein the active component is a combination of one or more of the metals: Ni, Mo, W, Co, Cr, Cu, Ce, La, Mn and Fe. The catalyst in the present invention has excellent performance, high activity, good stability and a low reaction temperature, effectively reduces reaction energy consumption, and has industrial application value.
B01J 27/125 - HalogènesLeurs composés avec du scandium, de l'yttrium, de l'aluminium, du gallium, de l'indium ou du thallium
B01J 27/138 - HalogènesLeurs composés avec des métaux alcalino-terreux, du magnésium, du béryllium, du zinc, du cadmium ou du mercure
B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité
C07C 17/25 - Préparation d'hydrocarbures halogénés par élimination d'halogénures d'hydrogène à partir d'hydrocarbures halogénés
6.
LIQUID CRYSTAL COMPOSITION HAVING EXTREMELY LOW DIELECTRIC LOSS, AND HIGH-FREQUENCY COMPONENT COMPRISING SAME
1123233 are alkyl groups having 1-10 carbon atoms, or alkenyl groups having 2-10 carbon atoms, fluorinated alkyl groups, fluorinated alkenyl groups, cycloalkyl groups, halogen, or NCS; ring A and ring B are benzene rings, cyclohexane, or cyclohexene. The liquid crystal composition can obtain large dielectric tunability, extremely low dielectric loss, and a high quality factor at high frequency, expand the nematic phase working temperature range, reduce rotational viscosity, and obtain a large low-frequency dielectric constant.
C09K 19/44 - Mélanges de composés formant des cristaux liquides couverts par plus d'un groupe précédent contenant des composés à noyaux benzéniques directement liés
C09K 19/12 - Composés non stéroïdes formant des cristaux liquides contenant au moins deux cycles non condensés contenant au moins deux cycles benzéniques au moins deux cycles benzéniques directement liés, p. ex. biphényles
C09K 19/18 - Composés non stéroïdes formant des cristaux liquides contenant au moins deux cycles non condensés contenant au moins deux cycles benzéniques liés par une chaîne carbonée la chaîne contenant des liaisons triples carbone-carbone, p. ex. tolanes
C09K 19/30 - Composés non stéroïdes formant des cristaux liquides contenant au moins deux cycles non condensés contenant des cycles non aromatiques saturés ou insaturés, p. ex. cycle cyclohexanique
Disclosed is a catalyst for preparing 2,3,3,3-tetrafluoropropene by gas-phase hydrodechlorination, which solves the problem of the high costs and easy deactivation of traditional chlorofluorocarbon hydrodechlorination catalysts. The disclosed catalyst is characterized in consisting of an active component and a carrier, wherein the active component is a combination of one or more of the metals: Ni, Mo, W, Co, Cr, Cu, Ce, La, Mn and Fe. The catalyst in the present invention has excellent performance, high activity, good stability and a low reaction temperature, effectively reduces reaction energy consumption, and has industrial application value.
A catalyst for efficient conversion of hydrogen chloride to produce chlorine gas, characterized in that based on mass percentage, a catalyst precursor consists of: 70% to 80% of component A, 5% to 10% of component B, 1% to 2% of component C, 0.1% to 0.3% of component D, and the balance of SiO2; the component A being Na--type mordenite; the component B being Cu2+; the component C being Fr+ or Cs+; and the component D being Re3+ or Ir3+. The catalyst is suitable for the high conversion of hydrogen chloride to produce chlorine gas.
B01J 29/26 - Zéolites aluminosilicates cristallinesLeurs composés isomorphes du type mordénite contenant de l'arsenic, de l'antimoine, du bismuth, du vanadium, du niobium, du tantale, du polonium, du chrome, du molybdène, du tungstène, du manganèse, du technétium ou du rhénium
A hydrogen chloride conversion catalyst, characterized in that based on mass percentage, a catalyst precursor consists of: 85% to 90% of component A, 5% to 10% of component B, 1% to 2% of component C, 3% to 5% of component D, and 1% to 2% of component E, the component A being activated alumina, the component B being one or more of Nb, Mo, Ta, and W, the component C being K+ or Cs+, the component D being ammonium fluoride, and the component E being silicon oxide. The preparation of the catalyst comprises the steps of: first, mixing the component A and a part of the component B, grinding and baking the resultant to obtain a catalyst powder; second, using the remaining part of the component B in combination with the component C to impregnate and modify the catalyst powder; and finally, mixing the modified catalyst powders with the component D and the component E, performing granulation, compression molding, and baking so as to obtain a hydrogen chloride conversion catalyst having a high conversion rate. The catalyst is suitable for the gas phase oxidation of hydrogen chloride to produce chlorine gas.
Provided is an efficient method for separating 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene, having a green and safe operation process. The method uses a halogenated hydrocarbon, an alcohol, an ether, a nitrile, a ketone, an amide or a sulfoxide with a boiling point within the range of 50ºC - 250ºC as an extraction agent, and a mixture of 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene is separated by extraction and rectification, wherein the mass ratio of the extraction agent to the mixture of 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene is 4:1 - 10:1.
Disclosed are a joint production method and device for aziridine, piperazine and triethylenediamine. The method comprises: reaction 1, preparing piperazine and triethylenediamine by taking ethanol amine as a raw material under the existence of a cyclamine catalyst; reaction 2, preparing aziridine by taking the ethanol amine as the raw material under the existence of a catalyst B; and taking heat released in the reaction 1 as a heat source of heat absorption in the reaction 2. The device comprises a reactor 1 for carrying out the reaction 1 and the heat exchange between reaction materials of the reaction 1 and the raw material of the reaction 2 and a reactor 2 for carrying out the reaction 2. According to the present invention, the same raw material, namely the ethanol amine is adopted, aziridine, piperazine and triethylenediamine can be produced in a joint manner, the heat released in the reaction 1 is used for preheating materials in the reaction 2, so that heat coupling between the reactions is implemented, energy conservation is facilitated and competitiveness of the device is improved.
B01J 21/02 - Bore ou aluminiumLeurs oxydes ou hydroxydes
B01J 21/06 - Silicium, titane, zirconium ou hafniumLeurs oxydes ou hydroxydes
B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en généralAppareils appropriés
B01J 31/02 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques
12.
Chromium-free catalyst for gas-phase fluorination and application thereof
Disclosed in the present invention are a chromium-free gas phase fluorination catalyst and an application thereof. The precursor of the related chromium-free gas phase fluorination catalyst consists of a compound containing iron element, a compound containing rare earth metal element and a compound containing element A, wherein element A is one selected from Ca, Al, Mg and Ti, the precursor is subjected to roasting and fluorination treating to obtain the chromium-free gas phase fluorination catalyst. The precursor of the catalyst is roasted at 400-500° C. and fluoridized with hydrogen fluoride at 350-450° C. to obtain the chromium-free gas phase fluorination catalyst. The catalyst has characteristics of being chromium-free and environment-friendly, good catalytic activity and long life etc. The catalyst can be used for preparing hydrofluoroolefins or hydrochlorofluoroolefins from halohydrocarbons.
C07C 17/20 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène
C07C 21/18 - Composés acycliques non saturés contenant des atomes d'halogène contenant des liaisons doubles carbone-carbone contenant du fluor
C07C 17/25 - Préparation d'hydrocarbures halogénés par élimination d'halogénures d'hydrogène à partir d'hydrocarbures halogénés
B01J 23/83 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des terres rares ou des actinides
y and in the presence of a compound catalyst, undergoes, through n serially-connected reactors, gas-phase fluorination with hydrogen fluoride, producing 1,2,3-trichloro-1,1,3-trifluoropropane, and 1,2-dichloro-1,1,3,3-tetrafluoropropane; in said formula, x=1, 2 or 3; y=1 or 2, and 3≦x+y≦5; (b) 1,2,3-trichloro-1,1,3-trifluoropropane, and 1,2-dichloro-1,1,3,3-tetrafluoropropane undergo, in the presence of a dehalogenation catalyst, gas-phase dehalogenation with hydrogen, producing 3-chloro-1,3,3-trifluoropropene, and 1,1,3,3-tetrafluoropropene; (c) 3-chloro-1,3,3-trifluoropropene and 1,1,3,3-tetrafluoropropene undergo, in the presence of a fluorination catalyst, gas-phase fluorination with hydrogen fluoride, producing 1,3,3,3-tetrafluoropropene. The present invention is primarily used to produce 1,3,3,3-tetrafluoropropene.
C07C 17/20 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène
C07C 21/18 - Composés acycliques non saturés contenant des atomes d'halogène contenant des liaisons doubles carbone-carbone contenant du fluor
C07C 17/358 - Préparation d'hydrocarbures halogénés par des réactions n'influençant pas le nombre d'atomes de carbone ou d'halogène dans les molécules par isomérisation
B01J 23/00 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe
14.
Process for the preparation of 2, 3, 3, 3-tetrafluoropropene
2Cl undergoes gas-phase fluorination with hydrogen fluoride through n serially-connected reaction vessels in the presence of a compound catalyst, producing 2,3-dichloro-1,1,1,2-tetrafluoropropane, 1,2,3-trichloro-1,1,2-trifluoropropane, and 1,3-dichloro-1,1,2,2-tetrafluoropropane; in said formula, x=1, 2, 3, y=1, 2, and 3≦x+y≦5; b. the 2,3-dichloro-1,1,1,2-tetrafluoropropane, 1,2,3-trichloro-1,1,2-trifluoropropane, and 1,3-dichloro-1,1,2,2-tetrafluoropropane undergo gas-phase dehalogenation with hydrogen in the presence of a dehalogenation catalyst, producing 2,3,3,3-tetrafluoropropene and 3-chloro-2,3,3-trifluoropropene, then separation and refining are performed, producing 2,3,3,3-tetrafluoropropene. The present invention is primarily used to produce 2,3,3,3-tetrafluoropropene.
C07C 17/383 - SéparationPurificationStabilisationEmploi d'additifs par distillation
B01J 23/89 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer combinés à des métaux nobles
B01J 27/138 - HalogènesLeurs composés avec des métaux alcalino-terreux, du magnésium, du béryllium, du zinc, du cadmium ou du mercure
B01J 35/00 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général
C07C 17/20 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène
C07C 19/08 - Composés acycliques saturés contenant des atomes d'halogène contenant du fluor
15.
Process for the joint preparation of 1, 3, 3, 3-tetrafluoropropene and 2, 3, 3, 3-tetrafluoropropene
z (Formula III), m=0, 1, 2; n=1, 2; p=2, 3; x=1, 2, 3; y=1, 2; z=1, 2 and 4≦x+y+z≦6; (b) the 1,2,3-trichloro-3,3-difluoropropene, 1,2,3-trichloro-1,1,2-trifluoropropane and 1,2,3-trichloro-1,1,3-trifluoropropane undergo dechlorination, producing 3-chloro-3,3-difluoropropyne, 3-chloro-2,3,3-trifluoropropene and 3-chloro-1,3,3-trifluoropropene; and (c) the 3-chloro-3,3-difluoropropyne, 3-chloro-2,3,3-trifluoropropene and 3-chloro-1,3,3-trifluoropropene are reacted with hydrogen fluoride, simultaneously yielding 1,3,3,3-tetrafluoropropene and 2,3,3,3-tetrafluoropropen.
C07C 17/20 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène
C07C 17/21 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène avec augmentation simultanée du nombre d'atomes d'halogène
C07C 17/23 - Préparation d'hydrocarbures halogénés par déshalogénation
C07C 17/383 - SéparationPurificationStabilisationEmploi d'additifs par distillation
Disclosed are a joint production method and device for aziridine, piperazine and triethylenediamine. The method comprises: reaction 1, preparing piperazine and triethylenediamine by taking ethanol amine as a raw material under the existence of a cyclamine catalyst; reaction 2, preparing aziridine by taking the ethanol amine as the raw material under the existence of a catalyst B; and taking heat released in the reaction 1 as a heat source of heat absorption in the reaction 2. The device comprises a reactor 1 for carrying out the reaction 1 and the heat exchange between reaction materials of the reaction 1 and the raw material of the reaction 2 and a reactor 2 for carrying out the reaction 2. According to the present invention, the same raw material, namely the ethanol amine is adopted, aziridine, piperazine and triethylenediamine can be produced in a joint manner, the heat released in the reaction 1 is used for preheating materials in the reaction 2, so that heat coupling between the reactions is implemented, energy conservation is facilitated and competitiveness of the device is improved.
B01J 27/18 - PhosphoreSes composés contenant de l'oxygène avec des métaux
B01J 21/02 - Bore ou aluminiumLeurs oxydes ou hydroxydes
B01J 21/06 - Silicium, titane, zirconium ou hafniumLeurs oxydes ou hydroxydes
B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en généralAppareils appropriés
B01J 31/02 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques
17.
Catalyst for synthesizing ethylenimine as well as preparation method and application thereof
The present invention relates to a catalyst for synthesizing ethylenimine as well as a preparation method and application thereof. The related catalyst comprises a carrier and metal ions loaded on the carrier; the carrier is a composite oxide comprising titanium, silicon and phosphorus elements; the metal ions are magnesium ions, iron ions and cesium ions; the molar ratio of the magnesium ions to the iron ions to the cesium ions is (1-10):1:0.1; the mass of all metal ions is 0.5-10 percent of that of the carrier. In the related preparation method, a catalyst precursor is roasted at the temperature of 350-650° C., so that the catalyst is obtained; the catalyst precursor is the mixture of the carrier, soluble salt of magnesium, soluble salt of iron and soluble salt of cesium. The present invention also provides the application of the catalyst to synthesis of the ethylenimine by using amino alcohol as the raw material. Compared with a common catalyst which has the requirement on the temperature of over 400° C., the catalyst of the present invention obviously reduces the reaction temperature. The prepared catalyst can catalyze the intramolecular dehydration reaction of the amino alcohol and has relatively excellent selectivity.
C07D 203/08 - Composés hétérocycliques contenant des cycles à trois chaînons ne comportant qu'un seul atome d'azote comme unique hétéro-atome du cycle non condensés avec d'autres cycles ne comportant pas de liaison double entre chaînons cycliques ou entre chaînons cycliques et chaînons non cycliques avec uniquement des atomes d'hydrogène, des radicaux hydrocarbonés ou des radicaux hydrocarbonés substitués, liés directement à l'atome d'azote du cycle
B01J 27/182 - PhosphoreSes composés avec du silicium
B01J 23/78 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des métaux alcalins ou alcalino-terreux ou du béryllium
B01J 37/00 - Procédés de préparation des catalyseurs, en généralProcédés d'activation des catalyseurs, en général
B01J 35/00 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général
B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité
B01J 37/02 - Imprégnation, revêtement ou précipitation
18.
Chromium-free catalyst for gas-phase fluorination and application thereof
Disclosed in the present invention is a chromium-free catalyst for gas-phase fluorination and an application thereof. The precursor of the related chromium-free catalyst for gas-phase fluorination consists of a compound containing iron element, a compound containing rare earth metal element and a compound containing element A, wherein element A is one selected from Ca, Al, Mg and Ti, the precursor is subjected to calcination and fluorination treatment to obtain the chromium-free catalyst for gas-phase fluorination. The precursor of the catalyst is calcined at 400-500° C. and fluorinated with hydrogen fluoride at 350-450° C. to obtain the chromium-free fluorinated catalyst. The catalyst has characteristics of being chromium-free and environment-friendly, good catalytic activity and long life etc. The catalyst can be used for preparing hydrofluoroolefins or hydrochlorofluoroolefins from halohydrocarbons.
B01J 23/83 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des terres rares ou des actinides
B01J 27/128 - HalogènesLeurs composés avec des métaux du groupe du fer ou avec des métaux du groupe du platine
C07C 17/20 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène
C07C 17/25 - Préparation d'hydrocarbures halogénés par élimination d'halogénures d'hydrogène à partir d'hydrocarbures halogénés
C07C 21/18 - Composés acycliques non saturés contenant des atomes d'halogène contenant des liaisons doubles carbone-carbone contenant du fluor
19.
PROCESS FOR THE PREPARATION OF 1, 3, 3, 3-TETRAFLUOROPROPENE
Disclosed is a process for the preparation of 1, 3, 3, 3-tetrafluoropropene, comprising: a. a compound having the formula CF3-xClxCHClCHF2-yCly and in the presence of a compound catalyst, undergoes, through a number n of serially-connected reaction vessels, gas-phase fluorination with hydrogen fluoride, producing 1, 2, 3-trichloro-1, 1, 3-trifluoropropane, and 1, 2-dichloro-1, 1, 3, 3-tetrafluoropropane; in said formula, x=1, 2, 3; y=1, 2, and 3≤x+y≤5; b. 1, 2, 3-trichloro-1, 1, 3-trifluoropropane, and 1, 2-dichloro-1, 1, 3, 3-tetrafluoropropane undergo, in the presence of a dehalogenation catalyst, gas-phase dehalogenation with hydrogen, producing 3-chloro-1, 3, 3-trifluoropropene, and 1, 1, 3, 3-tetrafluoropropene; c. 3-chloro-1, 3, 3-trifluoropropene and 1, 1, 3, 3-tetrafluoropropene undergo, in the presence of a fluorination catalyst, gas-phase fluorination with hydrogen fluoride, producing 1, 3, 3, 3-tetrafluoropropene. The present invention is primarily used to produce 1,3,3,3-tetrafluoropropene.
C07C 17/20 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène
C07C 17/358 - Préparation d'hydrocarbures halogénés par des réactions n'influençant pas le nombre d'atomes de carbone ou d'halogène dans les molécules par isomérisation
C07C 21/18 - Composés acycliques non saturés contenant des atomes d'halogène contenant des liaisons doubles carbone-carbone contenant du fluor
20.
PROCESS FOR THE JOINT PREPARATION OF 1, 3, 3, 3-TETRAFLUOROPROPENE AND 2, 3, 3, 3-TETRAFLUOROPROPENE
A process for the joint preparation of 1, 3, 3, 3-tetrafluoropropene and 2, 3, 3, 3-tetrafluoropropene, comprising: a. a starting material of at least one compound having the structure of formula I, II, or III is reacted with hydrogen fluoride, producing 1, 2, 3-trichloro-3, 3-difluoropropene, 1, 2, 3-trichloro-1, 1, 2-trifluoropropane, and 1,2, 3-trichloro-1, 1, 3-trifluoropropane; in the compounds of said formulae CF 2-mCl m＝CCl-CHF 2-nCl n (formula I), CF 3-pCl pCHCl＝CH 2Cl (formula II), and CF 3-xCl xCF 2-yCl yCHF 2-zCl z (formula III), m=0, 1, 2; n=1, 2; p=2, 3; x=1, 2, 3; y=1, 2; z=1, 2 and 4≤x+y+z≤6; b. the 1, 2, 3-trichloro-3, 3-difluoropropene, 1, 2, 3-trichloro-1, 1, 2-trifluoropropane, and 1,2, 3-trichloro-1, 1, 3-trifluoropropane undergo dechlorination, producing 3-fluoro-3, 3-difluoropropyne, 3-fluoro-2, 3, 3-trifluoropropene, and 3-fluoro-1, 3, 3-trifluoropropene; c. the 3-fluoro-3, 3-difluoropropyne, 3-fluoro-2, 3, 3-trifluoropropene, and 3-fluoro-1, 3, 3-trifluoropropene are reacted with hydrogen fluoride, simultaneously yielding 1, 3, 3, 3-tetrafluoropropene and 2, 3, 3, 3-tetrafluoropropene.
C07C 21/18 - Composés acycliques non saturés contenant des atomes d'halogène contenant des liaisons doubles carbone-carbone contenant du fluor
C07C 17/21 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène avec augmentation simultanée du nombre d'atomes d'halogène
C07C 17/20 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'halogène par d'autres atomes d'halogène
21.
PROCESS FOR THE PREPARATION OF 2, 3, 3, 3-TETRAFLUOROPROPENE
Disclosed is a process for the preparation of 2, 3, 3, 3-tetrafluoropropene, comprising the following two reaction steps: a. a compound having the formula CF3-xClxCF2-yClyCH2Cl and in the presence of a compound catalyst, undergoes, through a number n of serially-connected reaction vessels, gas-phase fluorination with hydrogen fluoride, producing 2, 3-dichloro-1, 1, 1, 2-tetrafluoropropane, 1, 2, 3-trichloro-1, 1, 2-trifluoropropane, and 1, 3-dichloro-1, 1, 2, 2-tetrafluoropropane; in said formula, x=1, 2, 3, y=1, 2, and 3≤x+y≤5; b. the 2, 3-dichloro-1, 1, 1, 2-tetrafluoropropane, 1, 2, 3-trichloro-1, 1, 2-trifluoropropane, and 1, 3-dichloro-1, 1, 2, 2-tetrafluoropropane undergo, in the presence of a dehalogenation catalyst, gas-phase dehalogenation with hydrogen, producing 2, 3, 3, 3-tetrafluoropropene and 3-chloro-2, 3, 3-trifluoropropene, then separation and refining are performed, producing 2, 3, 3, 3-tetrafluoropropene. The present invention is primarily used to produce 2,3,3,3-tetrafluoropropene.
Provided is a method for synthesising trans-1,1,1,4,4,4-hexafluoro-2-butene, said method using 1,1,1-trifluoro-2,2-dichloroethane and a chlorinated ethene CH2=CX2 as raw materials, and being divided into three steps: (a) the reaction of 1,1,1-trifluoro-2,2-dichloroethane with CH2=CX2 in the presence of a telomerisation catalyst and a catalytic additive to synthesise CF3CHClCH2CClX2; (b) the photochlorination of CF3CHClCH2CClX2 to synthesise CF3CHClCH2CCl3; (c) the gas phase fluorination of CF3CHClCH2CCl3 in the presence of a fluorination catalyst to synthesise trans-1,1,1,4,4,4-hexafluoro-2-butene. CH2=CX2 is ethene, chloroethene or 1,1-dichloroethene. The present invention has the features of high trans selectivity and inexpensive raw materials.
Disclosed are a magnesium fluoride-based catalyst which is stable above 400oC and has a large specific surface area, and a preparation method for said catalyst. The present invention solves problems such as poor thermal stability and small specific surface area in magnesium fluoride-based catalyst preparation. The present preparation method for the magnesium fluoride-based dehydrohalogenation catalyst comprises the following steps: (1) preparing a suspension solution containing an insoluble magnesium salt and a surfactant, refluxing at 100oC, roasting for 4 hours at 400-550oC, and obtaining magnesium oxide having a large specific surface area; (2) adding an aqueous solution of hydrofluoric acid or ammonium fluoride in a dropwise manner to the magnesium oxide substrate obtained in (1) to perform fluorination, and roasting for 4 hours at 400oC-500oC to obtain magnesium fluoride; (3) impregnating the magnesium fluoride substrate obtained in (2) with an aqueous solution of a doping component, and finally roasting at 400oC-500oC to obtain the catalyst. The catalyst of the present invention implements efficient dehydrohalogenation of a halofluoroalkane.
B01J 23/78 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des métaux alcalins ou alcalino-terreux ou du béryllium
B01J 23/80 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec du zinc, du cadmium ou du mercure
C07C 17/25 - Préparation d'hydrocarbures halogénés par élimination d'halogénures d'hydrogène à partir d'hydrocarbures halogénés
C07C 21/18 - Composés acycliques non saturés contenant des atomes d'halogène contenant des liaisons doubles carbone-carbone contenant du fluor
24.
METHOD FOR PREPARING 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE
Disclosed is a method for preparing 2-chloro-1,1,1,2-tetrafluoropropane. According to the method, 2-chloro-3,3,3-trifluoropropene is used as the raw material. The method comprises the following step: using a metal halide and a perfluorosulfonic acid as catalysts, and conducting liquid phase fluorination synthesis on 2-chloro-3,3,3-trifluoropropene and hydrogen fluoride to obtain 2-chloro-1,1,1,2-tetrafluoropropane, wherein the metal halide is SbCl5, TiCl4, SnCl4, NbCl5, TaCl5, SbF5, SbCl2F3, TiF4, SnF4, NbF5 or TaF5, the perfluorosulfonic acid is FSO3H, CF3SO3H, C2F5SO3H or C4F9SO3H, the molar ratio between the metal halide and the perfluorosulfonic acid is 1:0.1 to 10, the molar ratio between the HCFC-1233xf and the HF is 1:1 to 30, and the reaction temperature ranges from 25°C to 150°C. The method for preparing 2-chloro-1,1,1,2-tetrafluoropropane in the present invention has the advantages that the reaction selectivity is high, the chlorine gas is not needed in the reaction process, and the service life of the catalysts is long and the like. The present invention is used for preparation of 2-chloro-1,1,1,2-tetrafluoropropane.
The present invention relates to a catalyst for synthesizing ethylenimine as well as a preparation method and application thereof. The related catalyst comprises a carrier and metal ions loaded on the carrier; the carrier is a composite oxide comprising titanium, silicon and phosphorus elements; the metal ions are magnesium ions, iron ions and cesium ions; the molar ratio of the magnesium ions to the iron ions to the cesium ions is (1-10):1:0.1; the mass of all metal ions is 0.5-10 percent of that of the carrier. In the related preparation method, a catalyst precursor is roasted at the temperature of 350-650 °C, so that the catalyst is obtained; the catalyst precursor is the mixture of the carrier, soluble salt of magnesium, soluble salt of iron and soluble salt of cesium. The present invention also provides the application of the catalyst to synthesis of the ethylenimine by using amino alcohol as the raw material. Compared with a common catalyst which has the requirement on the temperature of over 400 °C, the catalyst of the present invention obviously reduces the reaction temperature. The prepared catalyst can catalyze the intramolecular dehydration reaction of the amino alcohol and has relatively excellent selectivity.
B01J 27/182 - PhosphoreSes composés avec du silicium
B01J 27/185 - PhosphoreSes composés avec des métaux du groupe du fer ou avec des métaux du groupe du platine
B01J 23/02 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe des métaux alcalins ou alcalino-terreux ou du béryllium
C07D 203/06 - Composés hétérocycliques contenant des cycles à trois chaînons ne comportant qu'un seul atome d'azote comme unique hétéro-atome du cycle non condensés avec d'autres cycles ne comportant pas de liaison double entre chaînons cycliques ou entre chaînons cycliques et chaînons non cycliques
Disclosed are a joint production method and device for aziridine, piperazine and triethylenediamine. The method comprises: reaction 1, preparing piperazine and triethylenediamine by taking ethanol amine as a raw material under the existence of a cyclamine catalyst; reaction 2, preparing aziridine by taking the ethanol amine as the raw material under the existence of a catalyst B; and taking heat released in the reaction 1 as a heat source of heat absorption in the reaction 2. The device comprises a reactor 1 for carrying out heat exchange between reaction materials of the reaction 1 and the reaction 1 and the raw material of the reaction 2 and a reactor 2 for carrying out the reaction 2. According to the present invention, the same raw material, namely the ethanol amine is adopted, aziridine, piperazine and triethylenediamine can be produced in a joint manner, the heat released in the reaction 1 is used for preheating materials in the reaction 2, so that heat coupling between the reactions is implemented, energy conservation is facilitated and competitiveness of the device is improved.
C07D 203/08 - Composés hétérocycliques contenant des cycles à trois chaînons ne comportant qu'un seul atome d'azote comme unique hétéro-atome du cycle non condensés avec d'autres cycles ne comportant pas de liaison double entre chaînons cycliques ou entre chaînons cycliques et chaînons non cycliques avec uniquement des atomes d'hydrogène, des radicaux hydrocarbonés ou des radicaux hydrocarbonés substitués, liés directement à l'atome d'azote du cycle
C07D 295/027 - Composés hétérocycliques contenant des cycles polyméthylène imine d'au moins cinq chaînons, des cycles aza-3 bicyclo [3.2.2] nonane, piperazine, morpholine ou thiomorpholine, ne comportant que des atomes d'hydrogène liés directement aux atomes de carbone du cycle contenant uniquement des atomes d'hydrogène et de carbone en plus des hétéro-éléments du cycle ne contenant qu'un hétérocycle
Disclosed in the present invention are a chromium-free gas phase fluorination catalyst and an application thereof. The precursor of the related chromium-free gas phase fluorination catalyst consists of a compound containing iron element, a compound containing rare earth metal element and a compound containing element A, wherein element A is selected from one of Ca、Al、Mg and Ti, the precursor is subjected to roasting and fluorination treating to obtain the chromium-free gas phase fluorination catalyst. The precursor of the catalyst is roasted at 400-500℃ and fluoridized with hydrogen fluoride at 350-450℃ to obtain the chromium-free gas phase fluorination catalyst. The catalyst has characteristics of being chromium-free and environment-friendly, good catalytic activity and long life etc. The catalyst can be used for preparing hydrofluoroolefins or hydrochlorofluoroolefins from halohydrocarbons.
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