Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – Using apparatus of recited composition
Reexamination Certificate
2008-12-15
2011-12-20
Singh, Prem C (Department: 1771)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
Using apparatus of recited composition
C585S638000, C585S639000, C585S640000, C585S920000, C585S923000, C502S065000, C422S219000
Reexamination Certificate
active
08080700
ABSTRACT:
The invention relates to a method for forming olefins from an oxygenate-containing feedstock, comprising contacting the at least partially vaporized feed comprising oxygenates with a first catalyst upstream of an OTO reactor, the first catalyst consisting of a reactive guard bed of metal oxides comprising one or more metals from Groups 2, 3, and 4 of the Periodic Table and/or one or more metals in the Lanthanide and Actinide series, then contacting the feedstock in the OTO reactor with a second catalyst under conditions effective to form an effluent comprising the olefins.
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Dilley Christopher E.
Schmidt Gary T.
Vaughn Stephen N.
Xu Teng
ExxonMobil Chemical Patents Inc.
Faulkner Kevin M.
Hughes Gerald J.
Singh Prem C
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