Production of olefins
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United States of America Patent
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Nov 11, 2003
Grant Date -
N/A
app pub date -
Dec 5, 1998
filing date -
Dec 5, 1997
priority date (Note) -
Expired
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Abstract
A process for the catalytic cracking of at least one olefin in an olefinic stream containing impurities, the cracking process being selective towards light olefins in the effluent, the process comprising contacting a feedstock olefinic stream containing at least one sulphur-, nitrogen-and/or oxygen-derivative impurity with a crystalline silicate catalyst of the MFI-type, the catalyst having a silicon/aluminum atomic ratio of at least about 180, to produce an effluent stream having substantially the same olefinic content by weight as, but a different olefin distribution than, the feedstock stream.
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