This invention relates to an ethylene oxide catalyst which contains silver and one or more alkali metal promoters supported an a carrier having a crush strength of at least about 5 pounds and a settled packing density of at least about 30 pounds/cubic foot which comprises first and second alpha alumina components with a first alpha alumina component in the form of particles having a median crystallite size of from about 0.4 to about 4 microns providing from about 95% to about 40% of the total weight of alpha alumina in the carrier and a second alpha alumina component generated in situ by a sol-gel process and providing the balance of the alpha alumina in the carrier. Titania is optionally added to the carrier.
申请公布号
DE69409536(T2)
申请公布日期
1998.07.30
申请号
DE1994609536T
申请日期
1994.09.07
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., DEN HAAG/S'GRAVENHAGE, NL
发明人
MATUSZ, MAREK, HOUSTON, TX 77084, US;MESTERS, CAROLUS, MATTHIAS, ANNA, MARIA, NL-1031 CM AMSTERDAM, NL;BUFFUM, JOHN, EDWARD, HOUSTON, TX 77065, US