Catalytic composite and process for mercaptan sweetening

Details Catalytic composite and process for mercaptan sweetening Catalytic composite and process for mercaptan sweetening

1989-01-30

1990-01-30

Myers, Helane

Mineral oils: processes and products

Refining

Sweetening

208203, 208204, 208206, 208208R, 502163, C10G 2700

Patent

active

048971804

ABSTRACT:
This invention relates to a catalytic composite effective in oxidizing mercaptans contained in a sour petroleum distillate to disulfides. The catalytic composite comprises a metal chelate, an onium compound and optionally an alkali metal hydroxide. The onium compound may be selected from the group consisting of phosphonium, arsonium, stibonium, oxonium and sulfonium compounds, with phosphonium, oxonium and sulfonium compounds preferred. Additionally, metal phthalocyanines are a preferred class of metal chelates. This invention also relates to an improved process for treating a sour petroleum distillate, wherein the improvement comprises using the catalytic composite described above.

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"Nomenclature of Organic Compounds," Advances in Chemistry Series 126, J. H. Fletcher, O. C. Dermer and R. B. Fox, Editors, Amer. Chem. Soc. Publishers, pp. 189-190, Jan. 1974.

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