Selective conversion of cycloparaffins to form para-xylene using an antimony zeolite catalyst
AssigneeMobil Oil Corporation
InventorStephen A. Butter
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Abstract
A catalytic process is provided for the selective production of para-xylene by contacting, under conversion conditions, a charge stock containing, as a major reactant, at least one hydrocarbon selected from the group consisting of toluene, a C.sub.3 -C.sub.10 olefin, a C.sub.5 -C.sub.10 naphthene, a C.sub.3 -C.sub.10 paraffin, and mixtures of the foregoing with a catalyst comprising a composite of a crystalline aluminosilicate zeolite and antimony oxide, said zeolite having a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12.
Claims8
A process for the production of para-xylene which comprises contacting a charge stock consisting essentially of cyclohexane, cyclopentane or an alkyl cyclopentane having alkyl groups of from 1 to 5 carbon atoms, under conversion conditions, including a temperature between about 400.degree. and about 700.degree. C., a pressure between about atmospheric and about 1000 psig and a weight hourly space velocity of between about 0.1 and about 100, with a catalyst consisting essentially of a composite of a crystalline aluminosilicate zeolite and antimony oxide, said zeolite having a silica to alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12, collecting the resulting product and separating para-xylene therefrom.
Dependencies are inferred from the claim text.