Isomerization of xylene

Details Isomerization of xylene Isomerization of xylene

1980-03-25

1982-05-25

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By isomerization

585481, C07C 522

Patent

active

043318223

ABSTRACT:
In a process for isomerization of xylenes which comprises contactng an aromatic hydrocarbon stock mainly containing xylene isomers not attaining a thermodynamic equilibrium composition with a catalyst composition containing a crystalline aluminosilicate at an elevated temperature in the vapor phase in the presence of hydrogen, the improvement wherein said catalyst composition comprises a crystalline aluminosilicate having a silica/alumina mole ratio of at least 10 and contains at least two metals which are (a) platinum and (b) at least one metal selected from the group consisting of titanium, chromium, zinc, gallium, germanium, strontium, yttrium, zirconium, molybdenum, palladium, tin, barium, cesium, cerium, tungsten, osmium, lead, cadmium, mercury, indium, lanthanum, beryllium, lithium and rubidium.

REFERENCES:
patent: 4032434 (1977-06-01), Rausch
patent: 4101418 (1978-07-01), Antos
patent: 4152246 (1979-05-01), Weisang et al.
patent: 4152363 (1979-05-01), Tabak et al.
patent: 4197188 (1980-04-01), Antos

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