US 5,851,378 A · Hydrocracking catalyst comprising coated cracking component particles

Abstract

The invention relates to a hydrocracking catalyst containing at least one hydrogenation metal component, and particles of a cracking component of which at least 50% of the outer surface is coated with a layer of a pre-formed oxide, which layer has a thickness in the range of 10 nm to 5 .mu.m. The cracking component is either a zeolitic cracking component or an amorphous cracking component or a mixture of both. The particles may be coated with oxide by contacting uncoated particles having a mean particle size in the range of 0.1 to 10 .mu.m with an aqueous medium containing particles of the oxide to be provided as the coating having a particle size in the range of 10-5000 nm, with the ratio between the oxide particle size and the mean particle size of the cracking component particles being in the range of 0.001:1 to 0.5:1. The coating oxide is preferably alumina or silica/alumina.

Claims8

Dependent claims

Hydrocracking catalyst comprising at least one hydrogenation metal component and a cracking component which is either a zeolitic cracking component, or an amorphous cracking component, or a mixture thereof, wherein the zeolitic cracking component is an aluminosilicate zeolite or a non-aluminosilicate molecular sieve, wherein the cracking component has a mean particle size in the range of 0.1 .mu.m to 10 .mu.m, and wherein at least 50% of the outer surface of said cracking component particles is coated with a layer of pre-formed inorganic oxide or pre-formed inorganic hydroxide or combinations thereof, which layer has a thickness in the range of 10 nm to 5 .mu.m and which coated cracking component particles have a mean particle size of 0.11 .mu.m to 15 .mu.m.

Dependencies are inferred from the claim text.

Hydrocracking catalyst comprising coated cracking component particles

Life of this patent

Hydrocracking catalyst comprising coated cracking component particles

Life of this patent

Abstract

Claims8