Acid catalyzed hydrocarbon conversion processes utilizing a catalyst comprising a Group IVB, VB or VIB metal oxide on an inorganic refractory oxide support
US4233139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1978 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Jul 25, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G47/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
It has been discovered and forms the basis of the disclosure that various acid catalyzed hydrocarbon conversion processes such as catalytic cracking of gas oil; xylene isomerization; toluene disproportionation; dealkylation of aromatics; ethylene, butylene, isobutylene, propylene polymerization; olefin isomerization; alcohol dehydration; olefin hydration; alkylation; heavy ends cat cracking, etc. are dramatically improved insofar as percent conversion, and selectivity are concerned by the use of a catalyst selected from the group consisting of the oxides of tungsten, niobium and mixtures thereof, and tungsten or niobium oxides in combination with one or more additional metal oxides selected from the group consisting of tantalum oxide, hafnium oxide, chromium oxide, titanium oxide and zirconium oxide, supported on an inorganic refractory oxide support. These catalysts may be prepared by the methods known in the art, i.e., incipient wetness, impregnation, coprecipitation, etc. of the metal oxide precursor onto or with the supports followed by conversion into the oxide form. Before use, the metal oxide/support combination is preferably subjected to steaming at elevated temperatures ei…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.