Zeolite catalysts modified with group IA metals

Details Zeolite catalysts modified with group IA metals Zeolite catalysts modified with group IA metals

1982-01-18

1983-07-05

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252437, B01J 2928, B01J 2718

Patent

active

043917399

ABSTRACT:
A zeolite catalyst composition suitable for para-selective conversion of substituted aromatic compounds, e.g., to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. Such a composition comprises a zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, and a minor amount, e.g., at least at 0.25 weight percent of one or more of the alkali metals (e.g., Li, Na, K, Cs) and optionally phosphorus, said alkali metals and phosphorus being present in the catalyst at least in part in the form of their oxides.

REFERENCES:
patent: 4115424 (1978-09-01), Unland et al.
patent: 4218573 (1980-08-01), Tabak et al.
patent: 4263129 (1981-04-01), Chen
patent: 4274982 (1981-06-01), Chu

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