Zeolites modified with group VA metals

Details Zeolites modified with group VA metals Zeolites modified with group VA metals

1980-12-19

1983-02-01

Thomas, Earl C.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455Z, 252456, 585467, B01J 2718, B01J 2906

Patent

active

043714579

ABSTRACT:
A modified zeolite catalyst composition useful for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified prior to use by treatment with compounds of Group VA of the Periodic Chart (V, Nb and Ta), and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.

REFERENCES:
patent: 3709979 (1973-01-01), Chu
patent: 3962364 (1976-06-01), Young
patent: 4070407 (1978-01-01), Haag et al.
patent: 4078990 (1978-03-01), Brennan et al.
patent: 4090953 (1978-05-01), Bridger et al.
patent: 4108881 (1978-08-01), Rollman et al.
patent: 4159939 (1979-07-01), Antos
patent: 4302621 (1981-11-01), Chu

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