Methods and catalysts for removing mercaptans and mercaptide...

Details Methods and catalysts for removing mercaptans and mercaptide... Methods and catalysts for removing mercaptans and mercaptide...

C - Chemistry, Metallurgy

07

D

252/1.A, 260/196

C07D 209/44 (2006.01) B01J 31/18 (2006.01) C07C 319/24 (2006.01) C07F 9/00 (2006.01) C07F 15/06 (2006.01)

Patent

CA 1089449

METHOD AND CATALYST FOR REMOVING MERCAPTANS AND MERCAPTIDE COMPOUNDS FROM AQUEOUS ALKALINE SOLUTIONS Abstract Disclosed is a catalyst and method for converting mercaptans and mercaptide compounds in aqueous alkaline solution to disulfides. Catalytic agent is a metal complex synthesized from 3,3',4,4'-benzophenonetetracarboxylic dianhydride and converted to either the alkali metal salt or to the acid form. The method for oxidizing the mercaptide compounds Comprises Contacting mercap- tans and mercaptide compounds in aqueous alkaline solution with air in the presence of the catalyst and subsequently separating alkaline solution from the resultant disulfide compounds.

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