Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – To produce unsaturate
Reexamination Certificate
2008-04-08
2008-04-08
Wood, Elizabeth D. (Department: 1793)
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
To produce unsaturate
C585S327000, C585S329000, C585S330000, C585S638000, C585S639000, C585S640000, C502S020000, C502S208000, C502S214000
Reexamination Certificate
active
11363325
ABSTRACT:
A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst particles, the regenerated particles are mixed with particles having coke on their surface in a manner that maintains their catalytic activity at a predetermined level.
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Clem Kenneth R.
Coute Nicolas P.
Fung Shun C.
Hall Richard B.
Kochkar Hafedh
ExxonMobil Chemical Patents Inc.
Wood Elizabeth D.
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