Solvay & Cie

Kali-chemie Aktiengesellschaft

Yves Gobillon

Andre Lecloux

Guenter Weidenbach

Lucien Clerbois

Albert Degols

Louis Degueldre

Christian Biver

Particles of alloys of a noble metal chosen from among iridium, osmium, palladium, platinum, rhodium and ruthenium, hereafter represented by M, with at least one non-noble metal chosen among silver, bismuth, cadmium, cobalt, copper, tin, germanium, indium, manganese, mercury, molybdenum, nickel, gold, lead, rhenium, thallium, tellurium, technetium, tungsten, vanadium and zinc, hereafter referred to as Me', and Me', representing at least one non-noble metal, characterized in that they correspond to the general formula

Particles of an alloy of noble metals with non-noble metals

Disclosed is a method of purifying exhaust gases from an internal combustion engine operated with a substantially stoichiometric fuel-to-air mixture, the gases having an L-value of from about 0.8 to 1.2, wherein the exhaust gases are brought into contact with a catalyst comprising molybdenum, rhodium and, optionally, platinum supported on a carrier.

Purification of exhaust gases

A coating composition for application to an electrically conductive and relatively inert support at least the surface layer of which is titanium or a titanium alloy, to form a coated electrode for electrochemical processes, the composition essentially containing thermally decomposable compounds of iridium and of at least one non noble element selected from the group consisting of lithium, boron, beryllium, magnesium, gallium and germanium, in a liquid vehicle, the atomic ratio of iridium/non noble element being between 1/4 and 8/1. An electrode provided with a coating of this composition exhibits, inter alia, increased service life.

Electrodes for electrochemical processes

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Brussels, Belgium

Yves Gobillon