Hydrocarbon conversion catalyst composition and processes theref

Details Hydrocarbon conversion catalyst composition and processes theref Hydrocarbon conversion catalyst composition and processes theref

1996-12-12

1998-08-04

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By dealkylation

585488, 585486, C07C 412

Patent

active

057896429

ABSTRACT:
A catalyst composition and a process for hydrodealkylating a C.sub.9 + aromatic compound to a C.sub.6 to C.sub.8 aromatic hydrocarbon are disclosed. The composition comprises an alumina, molybdenum oxide, and zinc oxide. 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. Also disclosed is a process for producing the composition which comprises: (1) contacting an alumina, which can be optionally calcined before being contacted, with a molybdenum compound and zinc compound in a liquid medium under a condition sufficient to incorporate the molybdenum compound and zinc compound into the alumina to form a modified alumina wherein the volume of the liquid medium is larger than the bulk volume of alumina; (2) removing the excess liquid medium; (3) drying the modified alumina; and (4) calcining the modified alumina to a Mo/Zn-promoted alumina under a condition sufficient to effect the conversion of the molybdenum compound and zinc compound to corresponding oxides.

REFERENCES:
patent: 4440631 (1984-04-01), Togari et al.
patent: 5004854 (1991-04-01), Yan
patent: 5030787 (1991-07-01), Absil et al.
patent: 5409595 (1995-04-01), Harandi
Preparation of Supported-Catalysts by Equilibrium Deposition-Filtration; Scientific Bases for the Preparation of Heterogeneous Catalyst; Poncelet et al., 1995.

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