Process for selective ethyl scission of ethylaromatics to methylaromatics
AssigneeStandard Oil Company (Indiana)
InventorsAllen I. Feinstein, Ralph J. Bertolacini, Dae K. Kim
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Abstract
Ethyl aromatics contained in the C.sub.9 aromatic fraction from fractionated reformate are selectively converted to xylenes via ethyl scission in the presence of a catalyst comprising a carrier of highly purified gamma alumina containing essentially no silica and of a surface area of at least 100 m.sup.2 /g and a metal selected from the group consisting of a Group VIII metal and a Group VIII metal promoted with zinc.
Claims15
A process for selective ethyl scission of ethyl aromatics to methyl aromatics which process comprises contacting an alkylaromatic feed stream comprising ethyltoluene with hydrogen in the presence of a catalyst composition comprising a metal component selected from the group consisting of a Group VIII metal and a Group VIII metal promoted with zinc, the said group VIII metal selected from the gooup consisting of ruthenium, rhodium, and iridium, upon a high surface area carrier of highly purified alumina with a surface area of at least 100 m.sup.2 /g. and containing essentially no silica at a temperature within the range from about 600.degree. F. to about 1000.degree. F., and wherein about 0.01 to about 20 weights of hydrocarbon per weight of catalyst is present.
Dependencies are inferred from the claim text.