Details

Autor(en) / Beteiligte

• Wang, Ran
• Kang, Yikun
• Wu, Jianxiang
• Jiang, Tao
• Wang, Yongjie
• Gu, Limin
• Li, Yefei
• Yang, Xuejing
• Liu, Zhipan
• Gong, Ming

Titel

Electrifying Adipic Acid Production: Copper‐Promoted Oxidation and C−C Cleavage of Cyclohexanol

Ist Teil von

• Angewandte Chemie, 2022-12, Vol.134 (50), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2022

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Adipic acid is a central platform molecule for the polymer industry. Production of adipic acid with electroreforming technology is more sustainable compared to the thermochemical synthesis route. We discovered that incorporation of Cu2+ into a Ni hydroxide lattice significantly improved the electrocatalytic oxidation of cyclohexanol into adipate with a high yield (84 %) and selectivity (87 %). This Cu promotion effect serves as a mechanistic probe that can be combined with product analysis, steady‐state kinetics, and in situ spectroscopy. A two‐electron oxidation into cyclohexanone first occurs, followed by consecutive hydroxylation and C−C cleavage before dione formation. The central role of Cu2+ is to weaken the interaction between the NiOOH and surface‐adsorbed O‐centered radical that facilitates subsequent C−C cleavage. This enables a highly efficient two‐electrode system capable of electroreforming KA oil into adipate and pure H2. Efficient electrocatalytic oxidation of cyclohexanol into adipate was achieved by incorporating copper into a nickel hydroxide electrode. Cu2+ plays a key role in weakening the interaction between the surface‐adsorbed O‐centered radical and the NiOOH surface, thereby facilitating C−C cleavage.