Method for preparing hydrocarbon catalytic cracking catalyst compositions
US4631261A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1985 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Mar 15, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst composition suitable for catalytic cracking of a heavy hydrocarbon oil containing large amounts of metal contaminants is prepared by the steps of spray-drying an aqueous slurry containing a flash calcined alumina obtained by contacting an aluminum hydroxide prepared Bayer's process with a hot air of 350.degree.-700.degree. C. for 5 seconds or less, clay being predominantly composed of silica and alumina, a precursor of a siliceous inorganic oxide and a crystalline aluminosilicate; washing this particle until the alkali metal content therein is reduced to 1.0 wt % or less as oxide; and thereafter incorporating a rare earth component in the particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.