Catalysts for water dealkylation of aromatic hydrocarbons

Details Catalysts for water dealkylation of aromatic hydrocarbons Catalysts for water dealkylation of aromatic hydrocarbons

1979-03-16

1980-11-11

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252466J, 252466PT, B01J 2104, B01J 2340, B01J 2370, B01J 2372

Patent

active

042331862

ABSTRACT:
Water dealkylation catalysts of petroleum fractions containing monoalkylated or polyalkylated aromatic hydrocarbons including at least one metal of group VIII deposited in a proportion of from 0.1 to 5% by weight on a spinel, and having deposited in a proportion of from 0.1 to 5% by weight on a spinel, and having improved properties of activity, selectivity and stability, characterized in that the carrier is a mixed spinel of the formula (M.sub.x M'.sub.1-x)Al.sub.2 O.sub.4 wherein M is a bivalent base metal of group VIII such as nickel, iron and cobalt and M' is a bivalent metal belonging to groups 2a, 7b, 1b or 2b such as magnesium, manganese, copper and zinc.
The mol. ratio M/M' may vary from 0.5:1 to 50:1, preferably from 1:1 to 20:1.

REFERENCES:
patent: 2436923 (1948-03-01), Haensel
patent: 3691247 (1972-09-01), Billings
patent: 3823088 (1974-07-01), Box et al.
patent: 4013734 (1977-03-01), Kim

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