Pretreated alumina containing material and process for its prepa

Details Pretreated alumina containing material and process for its prepa Pretreated alumina containing material and process for its prepa

1988-06-28

1989-03-21

Shine, W. J.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Nitrogen compound containing

502216, 502219, 502220, 502221, 502222, B01F 2104, B01F 2702, B01F 2724

Patent

active

048143154

ABSTRACT:
A composition of matter is prepared by a process comprising the steps of impregnating a alumina-containing support material with a thiocyanate compound (preferably ammonium thiocyanate), drying the thus impregnated material, impregnating the dried material with a transition metal compound, drying and calcining the transition metal impregnated material. This composition of matter is used as catalyst composition for hydrotreating of hydrocarbon-containing feed streams (in particular heavy oils) which contain metal and sulfur compounds as impurities.
In another embodiment, a hydrotreating process comprises contacting hydrocarbon-containing feed stream (in particular heavy oils), which contains compounds of sulfur and metals, in the presence of a fixed catalyst bed comprising at least one layer (X) of impregnated substantially spherical alumina-containing particles which have been prepared by a process comprising the steps of impregnating a specific starting material with NH.sub.4 SCN and then heating the thus impregnated material at about 500.degree.-900.degree. C. for improved crush strength retention. In a preferred embodiment, the fixed catalyst bed further comprises at least one layer (Y) of catalyst particles comprising a refractory inorganic carrier and at least one hydrogenation promoter. A composition of matter comprising the impregnated, spherical alumina-containing particles described above, and a process for preparing them are also provided.

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