Process for electrochemical reduction of terephthalic acid

Details Process for electrochemical reduction of terephthalic acid Process for electrochemical reduction of terephthalic acid

C - Chemistry, Metallurgy

25

B

204/43.1

C25B 11/18 (2006.01) C25B 3/04 (2006.01)

Patent

CA 1169017

Abstract Terephthalic acid is electrochemically reduced to p-hydroxymethlbenzoic acid in a process in an electro- lysis cell in which a) the cathode is solid and metal with an amalgam of mercury surface and has a hydrogen overvoltage which is greater than the potential for the reduction of terephthalic acid to p-hydroxymethyl- benzoic acid, and, b) sufficient mercury is added of a mercury compound to maintain the process.

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