Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – From nonhydrocarbon feed
Patent
1992-06-09
1993-10-19
Garvin, Patrick P.
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
From nonhydrocarbon feed
585639, 585638, C07C 100
Patent
active
052547850
ABSTRACT:
The present invention provides a process for cracking or decomposing a feedstream containing a major proportion of at least one dialkyl ether to produce the corresponding olefins comprising contacting the feedstream with a faujasite aluminosilicate catalyst which is characterized in that at least about 50 wt. % of the alkali metal content originally present in said faujasite has been exchanged by at least one alkaline earth metal. The decomposition is preferably conducted in the vapor phase at preferred temperatures in the range of from about 125.degree. F. to about 600.degree. F. The process offers the advantages of longer catalyst life coupled with high yield and selectivity rates towards olefin production.
REFERENCES:
patent: 3240697 (1966-03-01), Miale
patent: 4467133 (1984-08-01), Chang et al.
patent: 4544793 (1985-10-01), Okada et al.
patent: 4691073 (1987-09-01), Michaelson
Hammond Barrington M.
Iaccino Larry L.
Pete Derrick D.
Rosenfeld David D.
Exxon Chemical Patents Inc.
Garvin Patrick P.
Irzinski E. D.
Russell Linda K.
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