Abstract

In a method of producing metal borohydride, M(BH4)n, from metal metaborate, M(BO2)n, in which M is a metal, such as a metallic metal, an alkali metal, an alkaline earth metal, a transition metal or a chemical compound behaving as a metal, and n is a valence value of the metal, metal borohydride is formed through a reaction of metal hydride, MHn, with trimethyl borate, B(OMe)3, and metal trimethyl borate is formed through a reaction of boric acid, H3BO3, with methanol, MeOH, under removal of water, H2O. An electrochemical cell is used for the conversion of metal metaborate and water, H2O, to boric acid, in the electrochemical cell. The electrochemical cell has an anodic half-cell and a cathodic half-cell separated by a cation exchange membrane, and a solvent and water is provided to both the anodic half-cell and the cathodic half-cell. Metal metaborate is provided to the anodic half-cell, where acid ions, H+, and electrons, e−, are generated at the anode from electrolysis of water, and H reacts with metal metaborate and water. The cation exchange membrane passes metal ions, Mn+, from the anodic half-cell to the cathodic half-cell, and metal hydroxide, M(OH)n, is formed in the cathodic half-cell.

IPC Classes  ?

• C25B 1/16 - Hydroxides
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 1/20 - Hydroxides
• C25B 1/22 - Inorganic acids
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
• C25B 11/052 - Electrodes comprising one or more electrocatalytic coatings on a substrate
• C25B 11/063 - Valve metal, e.g. titanium
• C25B 11/081 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of a single catalytic element or catalytic compound the element being a noble metal
• C25C 3/02 - Electrolytic production, recovery or refining of metals by electrolysis of melts of alkali or alkaline earth metals

Abstract

4n2nn333222O, to boric acid, in the electrochemical cell. The electrochemical cell has an anodic half-cell and a cathodic half-cell separated by a cation exchange membrane, and a solvent and water is provided to both the anodic half-cell and the cathodic half-cell. Metal metaborate is provided to the anodic half-cell, where acid ions, H+, and electrons, e-, are generated at the anode from electrolysis of water, and H+reacts with metal metaborate and water. The cation exchange membrane passes metal ions, Mn+nn, is formed in the cathodic half-cell.

IPC Classes  ?

• C25B 1/01 - Products
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 1/16 - Hydroxides
• C25B 1/20 - Hydroxides
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
• C01B 3/06 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
• C01B 6/11 - Preparation from boron or inorganic compounds containing boron and oxygen
• C25B 1/22 - Inorganic acids
• C25C 3/02 - Electrolytic production, recovery or refining of metals by electrolysis of melts of alkali or alkaline earth metals

IPC Classes  ?

• C01B 3/06 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
• C01B 6/11 - Preparation from boron or inorganic compounds containing boron and oxygen
• C25B 1/01 - Products
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 1/16 - Hydroxides
• C25B 1/20 - Hydroxides
• C25B 1/22 - Inorganic acids
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
• C25C 3/02 - Electrolytic production, recovery or refining of metals by electrolysis of melts of alkali or alkaline earth metals