Shape selective reactions utilizing zeolites modified with Group V A metals
AssigneeMobil Oil Corporation
InventorChin-Chiun C. Chu
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Abstract
A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of Group V A of the Periodic Chart (V, Nb and Ta), and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.
Claims25
A process for conversion of organic compounds, said process comprising contacting said organic compounds with a crystalline zeolite catalyst at a temperature of between about 250.degree. C. and about 750.degree. C. and a pressure within the approximate range of 10.sup.5 N/m.sup.2 to 10.sup.7 N/m.sup.2, said zeolite being characterized by a silica to alumina mole ratio of at least 12 and a constraint index within the approximate range of 1 to 12, said zeolite having undergone prior modification by treatment with compounds containing one or more of the elements of Group V A of the Periodic Chart, to deposit thereon at least 0.25 weight percent of such element.
Dependencies are inferred from the claim text.