SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (5): 1302-1310.DOI: 10.1016/j.cjche.2020.01.002

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

Preparation of ZSM-5 containing vanadium and Brønsted acid sites with high promoting of styrene oxidation using 30% H2O2

Xianfeng Liu1,2, Fu Yang1,3, Shuying Gao1, Bo Shao1, Shijian Zhou1, Yan Kong1   

  1. 1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China;
    2 College of Environment Engineering, Nanjing Institute of Technology, Nanjing 211167, China;
    3 School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • Received:2019-03-08 Revised:2019-10-19 Online:2020-07-29 Published:2020-05-28
  • Contact: Fu Yang, Yan Kong
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos. 21476108, 21276125, 21776129, 21706121 and 21908085), Natural Science Foundation of Jiangsu Province (Nos. BK20170995 and BK20190961), General Program for University Natural Science Research of Jiangsu Province (No. 16KJB530003) and the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Preparation of ZSM-5 containing vanadium and Brønsted acid sites with high promoting of styrene oxidation using 30% H2O2

Xianfeng Liu1,2, Fu Yang1,3, Shuying Gao1, Bo Shao1, Shijian Zhou1, Yan Kong1   

  1. 1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China;
    2 College of Environment Engineering, Nanjing Institute of Technology, Nanjing 211167, China;
    3 School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • 通讯作者: Fu Yang, Yan Kong
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Nos. 21476108, 21276125, 21776129, 21706121 and 21908085), Natural Science Foundation of Jiangsu Province (Nos. BK20170995 and BK20190961), General Program for University Natural Science Research of Jiangsu Province (No. 16KJB530003) and the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Abstract: Design and synthesis of low cost and efficacious industrial catalyst for the oxidation of styrene has been an important research project. Herein, ZSM-5 zeolite containing tetrahedral vanadium (V) and Brønsted acid sites (V-H-ZSM-5) was prepared, and identified by characterizations such as XRD, SEM, UV-vis, NH3-TPD, H2-TPR N2-adsorption/desorption and FTIR. V-H-ZSM-5 performed extremely enhanced catalytic activity for the oxidation of styrene with 30% H2O2 at 40℃. Moreover, in-situ FTIR spectrum was used to investigate the catalytic mechanism. The results demonstrate that Brønsted acid site could not only increase the adsorption concentration of styrene in the micropores of V-H-ZSM-5 via the π complex interaction between double bond of styrene and Brønsted acid sites, but also increase the oxidation potential of H2O2. The synergetic action of tetrahedral vanadium (V) and Brønsted acid enhanced the catalytic activity for the oxidation of styrene with 30% H2O2. Impressively, V-H-ZSM-5 performed high reusability within five runs at a low reaction temperature (40℃) for the first time.

Key words: Selective oxidation, Styrene, Brønsted acid, Bifunctional, Vanadium

摘要: Design and synthesis of low cost and efficacious industrial catalyst for the oxidation of styrene has been an important research project. Herein, ZSM-5 zeolite containing tetrahedral vanadium (V) and Brønsted acid sites (V-H-ZSM-5) was prepared, and identified by characterizations such as XRD, SEM, UV-vis, NH3-TPD, H2-TPR N2-adsorption/desorption and FTIR. V-H-ZSM-5 performed extremely enhanced catalytic activity for the oxidation of styrene with 30% H2O2 at 40℃. Moreover, in-situ FTIR spectrum was used to investigate the catalytic mechanism. The results demonstrate that Brønsted acid site could not only increase the adsorption concentration of styrene in the micropores of V-H-ZSM-5 via the π complex interaction between double bond of styrene and Brønsted acid sites, but also increase the oxidation potential of H2O2. The synergetic action of tetrahedral vanadium (V) and Brønsted acid enhanced the catalytic activity for the oxidation of styrene with 30% H2O2. Impressively, V-H-ZSM-5 performed high reusability within five runs at a low reaction temperature (40℃) for the first time.

关键词: Selective oxidation, Styrene, Brønsted acid, Bifunctional, Vanadium