Ecole Polytechnique Federale De Lausanne

Grt Group Sa

Ecole Polytechnique Féderale De Lausanne (epfl)

Eos Holding Sa

Gabor Laurenczy

Paul Joseph Dyson

Céline Fellay

J Paul Dyson

Severine Moret

Weijia Gan

Celine Fellay

Séverine Moret

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 RuClwith hydrophilic phosphine, firstly activated by carrying out a homogeneous reaction with formic acid and by adding at least one solid structure.

Method for producing hydrogen gas from formic acid

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.

Direct carbon dioxide hydrogenation to formic acid in acidic media

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&#xb0; 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.

Hydrogen production from formic acid

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Lonay, Switzerland

Gabor Laurenczy