The invention relates to a catalyst for oxygen reduction comprising a ruthenium and cobalt sulphide chemically stable in a hydrochloric environment in the presence of dissolved chlorine and optionally of dissolved oxygen, wherein said sulphide is Ru x Co y...

Provided are a carbon nanosphere having at least one opening, a method of preparing the same, a carbon nanosphere- supported catalyst using the carbon nanosphere having at least one opening, and a fuel cell using the carbon nanosphere- supported catalyst. ...

A method for the preparation of an organic gel with a porous texture made up of a mixture of benzene hydroxyl and aldehyde in a solvent consists of regulating the texture of the gel by adjustment of the pH of the original mixture. Independent claims are al...

An exhaust gas catalytic surface has a powdered substrate bearing a noble metal (gold, silver, platinum, palladium, rhodium, ruthenium, iridium or osmium) or an alloy containing one or more of these metals. The noble metal crystals deposited upon the subst...

The invention provides a noble metal-containing supported catalyst which contains a noble metal from the group Au, Ag, Pt, Pd, Rh, Ru, Ir, Os or alloys of one or more of these noble metals in the form of noble metal particles on a powdered support material...

A catalytic compound comprising an aggregate comprising a carbon phase and a precious metal-containing species phase.