Shape selective acid catalyzed reactions of olefins over crystal

Details Shape selective acid catalyzed reactions of olefins over crystal Shape selective acid catalyzed reactions of olefins over crystal

1980-04-09

1982-04-13

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

208111, 208120, 2603407, 570248, 585407, 585467, 585533, 585722, C07C 523

Patent

active

043249400

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.

REFERENCES:
patent: 3150202 (1964-09-01), Holt et al.
patent: 3791964 (1974-02-01), Kuehl
patent: 3804746 (1974-04-01), Chu
patent: 4108881 (1978-08-01), Rollmann et al.
patent: 4146584 (1979-03-01), Rollmann

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