SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (10): 2592-2599.DOI: 10.1016/j.cjche.2020.05.034

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Effect of Zr-doping on Pd/CexZr1-xO2 catalysts for oxidative carbonylation of phenol

Lichao Zhou1, Gang Feng1, Xiaojing Liu1, Zhimiao Wang1,2, Fang Li1,2, Wei Xue1,2, Yanji Wang1,2   

  1. 1 Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China;
    2 Tianjin Key Laboratory of Chemical Process Safety, Tianjin 300130, China
  • Received:2019-12-23 Revised:2020-05-21 Online:2020-12-03 Published:2020-10-28
  • Contact: Wei Xue
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21776057), the Natural Science Foundation of Tianjin City (Nos. 17JCYBJC20100, 18JCYBJC21500), and the Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Hebei Province (CL201605).

Effect of Zr-doping on Pd/CexZr1-xO2 catalysts for oxidative carbonylation of phenol

Lichao Zhou1, Gang Feng1, Xiaojing Liu1, Zhimiao Wang1,2, Fang Li1,2, Wei Xue1,2, Yanji Wang1,2   

  1. 1 Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China;
    2 Tianjin Key Laboratory of Chemical Process Safety, Tianjin 300130, China
  • 通讯作者: Wei Xue
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (21776057), the Natural Science Foundation of Tianjin City (Nos. 17JCYBJC20100, 18JCYBJC21500), and the Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Hebei Province (CL201605).

Abstract: Ce-Zr solid solution (CexZr1-xO2, CZO) was prepared by the citric acid sol-gel method. The CZO was then used as a support for Pd/CZO catalysts for the oxidative carbonylation of phenol to diphenyl carbonate. The Pd/CZO catalyst showed enhanced activity and diphenyl carbonate selectivity compared with the Pd/CeO2 catalyst. The catalytic performance of Pd/CZO was influenced by the calcination temperature of the CZO support. X-ray diffraction, scanning electron microscopy, N2 adsorption-desorption measurements, X-ray photoelectron spectroscopy and H2 temperature-programmed reduction measurements were used to investigate the effects of Zr doping and calcination temperature. The catalytic performance of Pd/CZO and Pd/CeO2 for the oxidative carbonylation of phenol was affected by several factors, including the specific surface area, Ce3+ and/or oxygen vacancy content, oxygen species type and Pd(II) content of the catalyst. All these properties were influenced by Zr doping and the calcination temperature of the CZO support.

Key words: Diphenyl carbonate, Oxidative carbonylation, Ce-Zr solid solution, Zr doping, Support

摘要: Ce-Zr solid solution (CexZr1-xO2, CZO) was prepared by the citric acid sol-gel method. The CZO was then used as a support for Pd/CZO catalysts for the oxidative carbonylation of phenol to diphenyl carbonate. The Pd/CZO catalyst showed enhanced activity and diphenyl carbonate selectivity compared with the Pd/CeO2 catalyst. The catalytic performance of Pd/CZO was influenced by the calcination temperature of the CZO support. X-ray diffraction, scanning electron microscopy, N2 adsorption-desorption measurements, X-ray photoelectron spectroscopy and H2 temperature-programmed reduction measurements were used to investigate the effects of Zr doping and calcination temperature. The catalytic performance of Pd/CZO and Pd/CeO2 for the oxidative carbonylation of phenol was affected by several factors, including the specific surface area, Ce3+ and/or oxygen vacancy content, oxygen species type and Pd(II) content of the catalyst. All these properties were influenced by Zr doping and the calcination temperature of the CZO support.

关键词: Diphenyl carbonate, Oxidative carbonylation, Ce-Zr solid solution, Zr doping, Support