CATALYST CONSISTING OF A TRANSITION METAL SUPPORTED ON A HIGH PURITY SILICA FOR THE METATHESIS OF OLEFIN(S)

摘要

An olefin metathesis catalyst consists essentially of a transition metal or oxide thereof, preferably tungsten oxide, supported on a high purity silica support possessing less than 150 ppm Mg, less than 900 ppm Ca, less than 900 ppm Na, less than 200 ppm Al, and less than 40 ppm Fe. The support possesses low amounts of acidic or basic sites such that in the reaction of pure butene-1 over said catalyst under metathesis reaction conditions the reaction possesses a weight selectivity to hexene-3 of at least 55 wt%.