Chemistry of inorganic compounds – Zeolite
Reexamination Certificate
2009-03-09
2011-12-06
Brunsman, David M (Department: 1732)
Chemistry of inorganic compounds
Zeolite
C423S306000, C585S640000, C502S060000
Reexamination Certificate
active
08071071
ABSTRACT:
A method is disclosed of treating a porous crystalline molecular sieve having a pore size less than or equal to about 5 Angstroms to decrease its coke selectivity in oxygenate to olefin conversion reactions. The method comprises contacting the molecular sieve with an acid having a kinetic diameter greater than or equal to that of acetic acid.
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Cao Guang
Kennedy Gordon J.
Shah Matu J.
Brunsman David M
ExxonMobil Chemical Patents Inc.
Weisberg David M.
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