Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By dealkylation
Reexamination Certificate
2009-03-18
2011-12-06
Dang, Thuan Dinh (Department: 1772)
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By dealkylation
C585S488000
Reexamination Certificate
active
08071832
ABSTRACT:
A process converts ethylbenzene in a C8 aromatic hydrocarbon mixture containing a large amount of non-aromatic hydrocarbons, mainly to benzene, by which the xylene loss is small, the deactivation rate of the catalyst can be reduced, and a high conversion rate to p-xylene can be attained. The process for converting ethylbenzene includes bringing a feedstock containing an alicyclic hydrocarbon(s) in an amount of not less than 1.0% by weight, ethylbenzene and xylene into contact with hydrogen in the presence of a catalyst to convert ethylbenzene mainly to benzene, wherein the catalyst is mainly composed of MFI zeolite and an inorganic oxide(s) and rhenium-supported, and wherein the conversion is carried out at a reaction pressure of not less than 1.0 MPa-G.
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Ichioka Ryoji
Watanabe Masatoshi
Yoshikawa Takahiro
Dang Thuan Dinh
DLA Piper (LLP) US
Toray Industries Inc.
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