Catalytic oxidation of mercaptan in petroleum distillate

Details Catalytic oxidation of mercaptan in petroleum distillate Catalytic oxidation of mercaptan in petroleum distillate

1979-08-15

1981-02-10

Levine, Herbert

Mineral oils: processes and products

Refining

Sweetening

208207, 252428, 252431N, C10G 2706

Patent

active

042500222

ABSTRACT:
A supported metal chelate catalyst, a method of preparing said catalyst, and a process of using said catalyst is disclosed. The catalyst is particularly useful in the treatment of a sour petroleum distillate or fraction to remove mercaptans contained therein. In preparing the catalyst, a solid adsorptive suppot is contacted with a solution of a metal chelate and with a substituted ammonium compound, and thereafter heated.
In one embodiment, the metal chelate, cobalt phthalocyanine disulfonate, is contacted with the adsorptive support, activated charcoal, contacted with the substituted ammonium compound, dimethylbenzylalkylammonium chloride, and then raised to a temperature of 120.degree. C. In another embodiment, the catalyst of the invention can be contacted with a mercaptan-containing petroleum distillate in admixture with an oxidizing agent and an alkaline solution to convert the mercaptans to innocuous disulfides.

REFERENCES:
patent: 3515677 (1970-06-01), Pochowicz
patent: 3686094 (1972-08-01), Laleuf et al.
patent: 4124493 (1978-11-01), Frame

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