Hydrotreating/hydrocracking catalyst
AssigneeMobil Oil Corporation
InventorsNai Y. Chen, David S. Shihabi
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Abstract
Conversion of hydrocarbons is conducted over low acidity zeolites such as the sodium form of zeolite ZSM-5 to yield products like those produced by hydrocracking but with substantially decreased proportion of light hydrocarbons having one to four carbon atoms. (Sulfiding of sodium zeolites activates such sodium zeolites for the present purpose.) The hydrocarbon conversion is conducted with mixed phase charge (Trickle mode) under hydrogen pressure or with liquid phase charge in a liquid-full reactor. A catalyst composition comprising a metallic hydrogenation catalyst on a refractory support and an alkali metal crystalline zeolite.
Claims9
A catalyst composition comprising a composite of discrete particles of (a) a metallic hydrogenation catalyst on a porous refractory support and (b) the alkali metal form of a crystalline zeolite characterized by a silica/alumina ratio above 12, a constraint index between about 1 and about 12 and an acid activity measured on the alpha scale less than 10.
A catalyst composition comprising a composite of discrete particles of (a) a metallic hydrogenation catalyst on a porous refractory support and (b) the alkali metal form of a crystalline zeolite characterized by a silica/alumina ratio above 12 and an acid activity measured on the alpha scale less than 10.
Dependencies are inferred from the claim text.