Shape selective acid catalyzed reactions of olefins over crystalline zeolites
US4324940A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Apr 9, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/65
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes are provided for conducting selective acid catalyzed reactions involving olefins. Said catalytic reactions comprise isomerization, alkylation, addition, oligomerization, polymerization, aromatization, cracking and hydrocracking. The useful catalysts of this invention are the acidic forms of a novel class of zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index in the approximate range of greater than about 2 to about 12. By utilization of such zeolites, smaller olefins are preferentially reacted when in mixed streams with larger olefins. Further of the such smaller olefins, linear olefins are preferentially reacted when in mixed streams with non-linear olefins and lesser branched olefins are preferentially reacted when in mixed streams with more highly branched olefins. Over the novel catalysts of this invention, para-disubstituted and/or mono-substituted aromatic olefins will react preferentially over ortho- and/or meta-disubstituted or more highly substituted aromatic olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.