Brief description of the metathesis using a catalyst based on a spherical has hierarchical comprising particles of metal oxides trapped in a matrix comprising the silicon oxide

摘要

The present invention relates to a method of olefin metathesis comprising the contact of said olefins with a catalyst previously activated by heating at a temperature between 100 and 1000°C. under an atmosphere of gas not reduction gear, said catalyst comprising at least one inorganic material with hierarchical porosity formed of at least two elementary spherical particles, each of said spherical particles having a maximum diameter of 200 μm and comprising particles of metal oxides of the size of at most 300 nm, containing at least one metal selected from among the tungsten, molybdenum, rhenium, cobalt, nickel, tin, ruthenium, the iron and titanium, taken alone or in mixture, said particles of metal oxides being present within a matrix comprising the silicon oxide, said matrix with walls made of microporous zeolitic entities and / or entities zeolitic measured -.