Inventors:
Shun C. Fung - Bridgewater NJ, US
Richard B. Hall - Whitehouse Station NJ, US
Hafedh Kochkar - Phillipsburg NJ, US
Karl G. Strohmaier - Port Murray NJ, US
Nicolas P. Coute - Houston TX, US
Kenneth R. Clem - Humble TX, US
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
B01J 20/34
B01J 27/182
C07C 6/00
C07C 1/00
US Classification:
585326, 585327, 585329, 585330, 585638, 585639, 585640, 502 20, 502208, 502214
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.