Water dealkylation catalyst of aromatic hydrocarbons

Details Water dealkylation catalyst of aromatic hydrocarbons Water dealkylation catalyst of aromatic hydrocarbons

1978-12-18

1980-12-09

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

585483, B01J 2904, B01J 2928

Patent

active

042383684

ABSTRACT:
Catalyst for water dealkylation of oil fractions containing monoalkylated or polyalkylated aromatic hydrocarbons, said catalyst containing at least one metal of group VIII in a proportion of 0.1 to 5% by weight on a carrier, characterized in that said carrier is a zeolite L that can be exchanged with either alkaline cations or polyvalent cations of groups V.sub.b, VI.sub.b and VII.sub.b. The zeolite L can be exchanged with a solution of metals such as lithium, sodium, caesium, chromium, manganese, and rhodium. A method of using the catalyst by contacting the hydrocarbons with the catalyst at a temperature of 400.degree.-600.degree. C., a pressure of 0-80 bars, a space velocity of the hydrocarbon of from 0.1 to 10h.sup.-1, and a water to hydrocarbon mol ratio of 2-20.

REFERENCES:
patent: 3354078 (1967-11-01), Miale et al.
patent: 3436434 (1969-04-01), Lester
patent: 3437709 (1969-04-01), Chloupek
patent: 3849292 (1974-11-01), Gleim
patent: 4139496 (1979-02-01), Dorawala et al.

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