2008•Journal of ElectrochemistryOpen access

Synthesis of Adipic Acid from Cyclohexanol by Electrochemical Oxidation Using Cr2O72-/Cr3+ as Indirect Oxidant

Zhen-hai LIANG, Yuqing Cui, Hongyan Sun

Abstract

Adipic acid was synthesized by electro-oxidation of cyclohexanol taking Cr2O72-/Cr3+ as indirect oxidant.The best technological conditions were optimized by orthogonal experiment.The optimum condition are as follows: the temperature is 35 ℃,ratio of crude material is n(cyclohexanol)∶n(Cr2O72-)=0.4∶1 and concentration of H2SO4 is 4 mol·L-1.Under these conditions,the yield of adipic acid can reach 70.29%.Moreover,The effects of concentration of Ag2SO4,(NH4)2SO4,H2SO4and current density on the formation of Cr2O72-were also explored.The rate of Cr3+ conversion can reach 82.52%.

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Key concepts: Cyclohexanol, Adipic acid, Yield (engineering), Electrochemistry, Chemistry, Inorganic chemistry, Nuclear chemistry, Materials science