Zeolite catalyst containing oxide of boron or magnesium

Details Zeolite catalyst containing oxide of boron or magnesium Zeolite catalyst containing oxide of boron or magnesium

1976-02-05

1977-09-20

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252437, 252455Z, B01J 2102, B01J 2714, B01J 2906

Patent

active

040495736

ABSTRACT:
A catalytic process is provided for converting lower monohydric alcohols and their ethers, especially methanol and dimethyl ethers, to a hydrocarbon mixture rich in C.sub.2 -C.sub.3 olefins and mononuclear aromatics with high selectivity for para-xylene production by contact, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite, said zeolite having a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12, said catalyst having been modified by the addition thereto of a minor proportion of an oxide of boron or magnesium either alone or in combination, or in further combination with an oxide of phosphorus.

REFERENCES:
patent: 3405074 (1968-10-01), Mattox
patent: 3894104 (1975-07-01), Chang et al.
patent: 3954670 (1976-05-01), Pine
patent: 3972832 (1976-08-01), Butter et al.

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