Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – From nonhydrocarbon feed
Patent
1991-02-28
1992-03-10
Shine, W. J.
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
From nonhydrocarbon feed
C07C 120
Patent
active
050951637
ABSTRACT:
Hydrothermal treatment of silicoaluminophosphate molecular sieves at temperatures in excess of about 700.degree. C. for periods sufficient to destroy a large proportion of their acid sites while retaining at least 80 percent of their crystallinity is found to result in a catalyst for converting methanol to lower olefins having increased catalyst life, increased selectivity for C.sub.2 -C.sub.3 olefins and decreased selectivity for paraffin production than the untreated SAPO-n starting composition.
REFERENCES:
patent: 4440871 (1984-04-01), Lok et al.
patent: 4499327 (1985-02-01), Kaiser
patent: 4623527 (1986-11-01), Derouane et al.
patent: 4849575 (1989-07-01), Lewis
McBride Thomas K.
McGinty Douglas J.
Miller Richard G.
Shine W. J.
UOP
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