Pretreated alumina containing material and process for its preparation
US4814315A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1988 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jun 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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 l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.