Catalysts

文件类型：PDF文档
文件大小：158K
A process for the hydrogenation of an unsaturated organic compound to produce a more saturated compound (preferably the conversion of alkynes to alkenes) comprising the step of contacting a process feed stream comprising the unsaturated compound with hydrogen in the presence of a catalyst comprising at least two metals selected from the group consisting of platinum, palladium, gold, titanium and tin supported on a catalyst support material, wherein the catalyst is made by depositing the metals on the support by sputtering. Suitable catalyst supports include carbon, alumina, silica, kieselguhr, titania, zirconia, magnesia, iron oxide, a rare-earth oxide, a clay, cement, diatomaceous earth, zeolite and silicon carbide. Preferred sputtered hydrogenation catalysts are palladium-gold (Pd-Au) and palladium-titanium (Pd-Ti) on particulate alumina or titanium dioxide (TiO2). Preferably the catalyst is made by cluster beam sputtering methods. The hydrogenation of 3-hexyne-1-ol to 3-hexene-1-ol and 1-pentyne to 1-pentene are exemplified.