Selective Hydrogenation of Phenols to Cyclohexanones Over Hydrotalcite‐Supported Pd Single‐Atom Catalyst
Abstract
Abstract Cyclohexanones are widely used chemicals and currently produced by the oxidation of the fossil feedstocks. Direct selective hydrogenation of lignin derivatives has great potential for producing these chemicals, but is challenging to obtain high yields. Here, we report that hydrotalcite‐supported Pd single‐atom (Pd/CHT‐800) catalyst enabled the hydrogenation of the benzene ring in the aromatics without the overreaction of carbonyl group, which could afford >99.9% yield of cyclohexanones using water as the reaction medium. The reaction mechanism was systematically studied by the control experiments and detailed in situ characterizations. In the Pd/CHT‐800 catalyst, the Pd‐O‐MgAl sites were formed, and the cooperation of the Pd atoms and calcined CHT material could not only realize the aromatic hydrogenation efficiently, but also inhibit the hydrogenation of the carbonyl group in the reaction effectively. This work provides a novel route for the sustainable production of cyclohexanones.
Article Details
Authors (11)
Yani Liu
Qinglei Meng
Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Center for Carbon Neutral Chemistry
Kaili Zhang
Wanying Han
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering
Xinrui Zheng
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering
Yaqin Wang
Centre for Reproductive Medicine, Renmin Hospital of Wuhan University
Yibo Han
Wuhan National High Magnetic Field Center and School of Physics
Jingping Wang
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
Haihong Wu
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering
Mingyuan He
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering
Buxing Han
Institute of Chemistry, Chinese Academy of Sciences , , ,