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

doi:10.1016/j.cjche.2020.02.005

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 CuPd_x nanoparticles and its impact on oxidation of 1,2-propanediol to aliphatic acids

Wei Tao, Aili Wang, Hengbo Yin

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 CuPd_x nanoparticles and its impact on oxidation of 1,2-propanediol to aliphatic acids

Wei Tao, Aili Wang, Hengbo Yin

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/Abstract

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 CuPd_x nanoparticles had an alloying trend. The catalytic activity of the palladium nanoparticles in the bimetallic CuPd_x 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 CuPdCuPd_x 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 CuPd_x nanoparticles had an alloying trend. The catalytic activity of the palladium nanoparticles in the bimetallic CuPd_x 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 CuPdCuPd_x nanoparticles, 1,2-Propanediol, Aliphatic acids

Wei Tao, Aili Wang, Hengbo Yin. Interaction between Pd and Cu nanoparticles in bimetallic CuPd_x nanoparticles and its impact on oxidation of 1,2-propanediol to aliphatic acids[J]. 中国化学工程学报, 2020, 28(4): 1085-1094.

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

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

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