Process for preparing alpha-olefins from light olefins
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United States of America Patent
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May 12, 1987
Grant Date -
N/A
app pub date -
Jan 3, 1986
filing date -
Jan 3, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing alpha-olefins is provided which comprises: (a) converting a feed containing one or more lower olefins in the presence of a medium pore crystalline silicate zeolite catalyst under reaction conditions providing a mixture of higher olefinic products; (b) contacting at least a part of the mixture of higher olefinic products resulting from step (a) with an alpha-olefin in the presence of a metathesis catalyst under olefin metathesis conditions to provide a mixture of alpha-olefins having a different carbon number than the feed olefin; (c) separating the alpha-olefin product of step (b) into at least two fractions, one fraction containing predominantly lower alpha-olefin hydrocarbons and the other fraction containing predominantly higher alpha-olefin hydrocarbons; and, (d) recycling at least a part of the lower alpha-olefin hydrocarbon fraction resulting from step (c) as feed for step (a).
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