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

260/196.1

C07D 487/22 (2006.01)

Patent

CA 1135257

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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