SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (4): 1085-1094.DOI: 10.1016/j.cjche.2020.02.005

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

Interaction between Pd and Cu nanoparticles in bimetallic CuPdx nanoparticles and its impact on oxidation of 1,2-propanediol to aliphatic acids

Wei Tao, Aili Wang, Hengbo Yin   

  1. Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212000, China
  • 收稿日期:2019-09-03 修回日期:2020-01-28 出版日期:2020-04-28 发布日期:2020-07-27
  • 通讯作者: Aili Wang, Hengbo Yin
  • 基金资助:
    This work was financially supported by the Funding of Jiangsu Science and Technology Department, China (FZ20180919). We also sincerely thank Dr. Kangmin Chen for his helpful support on TEM and HRTEM analyses.

Interaction between Pd and Cu nanoparticles in bimetallic CuPdx nanoparticles and its impact on oxidation of 1,2-propanediol to aliphatic acids

Wei Tao, Aili Wang, Hengbo Yin   

  1. Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212000, China
  • Received:2019-09-03 Revised:2020-01-28 Online:2020-04-28 Published:2020-07-27
  • Contact: Aili Wang, Hengbo Yin
  • Supported by:
    This work was financially supported by the Funding of Jiangsu Science and Technology Department, China (FZ20180919). We also sincerely thank Dr. Kangmin Chen for his helpful support on TEM and HRTEM analyses.

摘要: Bimetallic CuPd x nanoparticles synthesized by the wet chemical reduction method were used as the catalysts in the catalytic oxidation of 1,2-propanediol with gaseous oxygen to aliphatic acids. The palladium and copper nanoparticles in the bimetallic CuPdx nanoparticles had an alloying trend. The catalytic activity of the palladium nanoparticles in the bimetallic CuPdx nanoparticles was enhanced by the interaction between the palladium and copper nanoparticles. When the bimetallic CuPd7 nanoparticles catalyzed the oxidation of 1,2-propanediol in an alkaline aqueous solution at 100 ℃ for 3 h, lactic, formic, and acetic acids were dominantly produced with the total selectivity of above 99% at the 1,2-propanediol conversion of 85.9%. The simulation of the reaction kinetic equation on the CuPd7 catalyst showed that the reaction activation energy was 29.4 kJ·mol-1, indicating that the bimetallic CuPd7 nanoparticles had a high catalytic activity in the oxidation reaction between 1,2-propanediol and gaseous oxygen.

关键词: Bimetallic CuPdCuPdx nanoparticles, 1,2-Propanediol, Aliphatic acids

Abstract: Bimetallic CuPd x nanoparticles synthesized by the wet chemical reduction method were used as the catalysts in the catalytic oxidation of 1,2-propanediol with gaseous oxygen to aliphatic acids. The palladium and copper nanoparticles in the bimetallic CuPdx nanoparticles had an alloying trend. The catalytic activity of the palladium nanoparticles in the bimetallic CuPdx nanoparticles was enhanced by the interaction between the palladium and copper nanoparticles. When the bimetallic CuPd7 nanoparticles catalyzed the oxidation of 1,2-propanediol in an alkaline aqueous solution at 100 ℃ for 3 h, lactic, formic, and acetic acids were dominantly produced with the total selectivity of above 99% at the 1,2-propanediol conversion of 85.9%. The simulation of the reaction kinetic equation on the CuPd7 catalyst showed that the reaction activation energy was 29.4 kJ·mol-1, indicating that the bimetallic CuPd7 nanoparticles had a high catalytic activity in the oxidation reaction between 1,2-propanediol and gaseous oxygen.

Key words: Bimetallic CuPdCuPdx nanoparticles, 1,2-Propanediol, Aliphatic acids