LOW PRESSURE XYLENE ISOMERIZATION

LOW PRESSURE XYLENE ISOMERIZATION In a process for vapor phase isomerization of xylene in a mixture of alkyl aromatic compounds having eight carbon atoms; the improvement which comprises conducting the isomerization reaction in the presence of a catalyst consisting essentially of an aluminosilicate...

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Hauptverfasser:	MITCHELL, KENNETH M, WISE, JOHN J
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Zusammenfassung:	LOW PRESSURE XYLENE ISOMERIZATION In a process for vapor phase isomerization of xylene in a mixture of alkyl aromatic compounds having eight carbon atoms; the improvement which comprises conducting the isomerization reaction in the presence of a catalyst consisting essentially of an aluminosilicate crystalline zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12 at a partial pressure of said eight carbon atom alkyl aromatic compounds below about 100 pounds per square inch, a temperature of about 500.degree.F. to about 800.degree.F. and a space velocity of 3 to 13 pounds of said eight carbon atom aromatic compounds per pound of said zeolite per hour.