Solvay & Cie

Kali-chemie Aktiengesellschaft

Interox

Andre Lecloux

Yves Gobillon

Guenter Weidenbach

Paul Dantinne

Michel Kohler

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

The invention concerns a process for the preparation of epoxides by reaction of olefins with a percarboxylic resin. The percarboxylic resins are washed with a solvent containing water before being brought in contact with the olefins.

Process for preparing epoxides

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.

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Brussels, Belgium

Andre Lecloux