Catalyst composition and processes therefor and therewith

Details Catalyst composition and processes therefor and therewith Catalyst composition and processes therefor and therewith

1997-01-13

1999-05-25

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By dealkylation

585488, 585486, C07C 418

Patent

active

059070749

ABSTRACT:
A catalyst composition and a process for hydrodealkylating a C.sub.9 + aromatic compound such as, for example, 1,2,4-trimethylbenzene to a C.sub.6 to C.sub.8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises a zeolite, a metal oxide, and an activity modifier selected from the group consisting of silicon oxides, sulfur oxides, phosphorus oxides, boron oxides, magnesium oxides, tin oxides, titanium oxides, zirconium oxides, germanium oxides, indium oxides, lanthanum oxides, cesium oxides, and combinations of any two or more thereof. The process comprises contacting a fluid which comprises a C.sub.9 + aromatic compound with the catalyst composition under a condition sufficient to effect the conversion of a C.sub.9 + aromatic compound to a C.sub.6 to C.sub.8 aromatic hydrocarbon.

REFERENCES:
patent: 3972832 (1976-08-01), Butter et al.
patent: 4259537 (1981-03-01), Chin-Chiun
patent: 4297243 (1981-10-01), Moorehead
patent: 4496784 (1985-01-01), Moorehead
patent: 4532226 (1985-07-01), Chin-Chiun
patent: 5110478 (1992-05-01), Haag et al.

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