Shape selective reactions utilizing group III a metal-modified zeolite catalyst
AssigneeMobil Oil Corporation
InventorChin-Chiun 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 scandium, yttrium and/or samarium, and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.
Claims22
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 one or more compounds containing metal elements, chosen from Group III A of the Periodic Table of Elements, to deposit thereon at least 0.5 weight percent of such element.
Dependencies are inferred from the claim text.