Über die Herstellung von Hydrierungskatalysatoren durch Reduktion von Pt(IV) mit Elektron-Donator-Lösungsmitteln

Abstract

Certain electron-donor substances such as methanol, propylene oxide, ethyl acetate, are good solvents for PtCl₄, and also strong reducing agents at somewhat elevated temperatures. This fact can be used for an easy preparation of very reactive hydrogenation catalysts. A suitable carrier material is impregnated with the salt solution, the excess solvent is evaporated, and the reduction is carried out heating the supported material 1 h to 150-200° in vacuo. Hydrogenation of 1-octene with such catalyst occurs with a rate of 250 moles H₂/gAt Pt⁰ × min.
In the case of propylene oxyde a stable intermediate can be obtained which is soluble even in unpolar solvents, and has still a remarkable catalytic activity.