Abstract: A method for producing A hydrogen gas from formic acid, characterized in that at least one heterogeneous catalyst is used to transform the formic acid into hydrogen gas. The at least one heterogeneous catalyst contains heterogenized ruthenium. According to a first aspect of the invention, the at least one heterogeneous catalyst contains at least one hydrophilic phosphine ligand which is m-TPPTS (meta-trisulfonated triphenylphosphine). The at least one heterogeneous catalyst is preferably obtained by mixing an aqueous solution of RuCl3 with hydrophilic phosphine, firstly activated by carrying out a homogeneous reaction with formic acid and by adding at least one solid structure.

Abstract: The present invention relates to a method of producing formic acid in a catalyzed chemical reaction from hydrogen gas and carbon dioxide gas, said reaction being conducted in an acidic medium comprising a polar solvent over a wide range of temperatures at total gas pressure of hydrogen and carbon dioxide up to 250 bar without the addition of base, carbonate, hydrogen carbonate or formate. The method of the present invention is advantageous since the reaction may be conducted in a polar solvent such as water or DMSO.

Abstract: The present invention relates to a method of producing formic acid in a catalysed chemical reaction from hydrogen gas and carbon dioxide gas, said reaction being conducted in an acidic medium comprising a polar solvent over a wide range of temperatures at total gas pressure of hydrogen and carbon dioxide up to 250 bar without the addition of base, carbonate, hydrogen carbonate or formate. The method of the present invention is advantageous since the reaction may be conducted in a polar solvent such as water or DMSO.

Abstract: A method for producing A hydrogen gas from formic acid, characterized in that at least one heterogeneous catalyst is used to transform the formic acid into hydrogen gas. The at least one heterogeneous catalyst contains heterogenised ruthenium. According to a first aspect of the invention, the at least one heterogeneous catalyst contains at least one hydrophilic phosphine ligand which is m-TPPTS (meta-trisulfonated triphenylphosphine). The at least one heterogeneous catalyst is preferably obtained by mixing an aqueous solution of RuCl3 with hydrophilic phosphine, firstly activated by carrying out a homogeneous reaction with formic acid and by adding at least one solid structure.

Abstract: The present invention relates to a method of producing hydrogen gas and carbon dioxide in a catalytic reaction from formic acid, said reaction being conducted in an aqueous solution over a wide temperature range and already at room temperature (25° C.). The reaction is advantageous because it can be tuned to take place at very high rates, up to about 90 liter H2/minute/liter reactor volume. The gas produced is free of carbon monoxide. The method of the present invention is particularly suitable for providing hydrogen for a motor, fuel cell or chemical synthesis.

Abstract: The present invention relates to a method of producing hydrogen gas and carbon dioxide in a catalytic reaction from formic acid, said reaction being conducted in an aqueous solution over a wide temperature range and already at room temperature (25° C.). The reaction is advantageous because it can be tuned to take place at very high rates, up to about 90 litre H2/minute/litre reactor volume. The gas produced is free of carbon monoxide. The method of the present invention is particularly suitable for providing hydrogen for a motor, fuel cell or chemical synthesis.