Dehydrocyclodimerization process start-up procedure
US4945175A · kind A · utility
30Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1989 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | May 26, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A dehydrocyclodimerization process employing a catalyst comprising a crystalline aluminosilicate and a metal oxide component is started-up by contacting the catalyst with a start-up gas that contains less than 50 mole percent hydrogen. The catalyst is exposed to the gaseous atmosphere containing less than 50 mole percent hydrogen until a C.sub.2 -C.sub.5 aliphatic hydrocarbon feedstock is contacted with the catalyst at dehydrocyclodimerization reaction conditions at which point hydrogen is generated as a dehydrocyclodimerization reaction product and displaces the non-hydrogen start-up gas from the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.