Catalysis Communications (Dec 2022)

One-step production of adipic acid from cyclohexane over stable oxides (CeO2 & ZrO2) using O2: Enhanced oxidation activity in acidic medium

  • Sudip Dandapat,
  • Joshi Laxmikanth Rao,
  • Pravin R. Likhar,
  • Soumitra Payra,
  • Sounak Roy,
  • Tinku Baidya

Journal volume & issue
Vol. 172
p. 106555

Abstract

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One-step production of adipic acid from cyclohexane using O2 is a long due process for replacing conventional two-step process involving nitric acid oxidation of KA-oil. This work presents one-step oxidation of cyclohexane into adipic acid using O2 over stable oxides including CeO2 (Redox) and ZrO2 (Non-Redox) in acid medium. The effect of acidic medium and nature of metal oxide catalysts in cyclohexane oxidation have been investigated. While no activity was observed in solvent-free condition, presence of a polar protic solvent promoted significant improvement in oxidation activity.

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