Patent ID: 7754647

Claim:
A process for preparing a supported catalyst (catalyst C) comprising a support (support S) selected from the group consisting of an oxide, a phosphate, a silicate, a carbide, a boride and a nitride of a main group element and an element of transition groups VI and II, and mixtures thereof, and an active component (activator A) comprising one or more compounds containing one or more elements of transition groups V, VI and VII customary for the catalysis of metathesis reactions, wherein the process comprises a) preparing a catalyst precursor by applying an activator precursor of activator A to the support S, b) contacting the catalyst precursor prepared in step a) with a hydrocarbon compound at a temperature from −20 to 550° C., and c) heating the catalyst precursor prepared in step b) at a temperature from 410 to 850° C. in an inert gas atmosphere.