SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 41 ›› Issue (1): 384-391.DOI: 10.1016/j.cjche.2021.11.020

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

Bimetallic PtSn nanoparticles confined in hierarchical ZSM-5 for propane dehydrogenation

Tianlei Wang1, Zhikang Xu1, Yuanyuan Yue1, Tinghai Wang1, Minggui Lin3, Haibo Zhu1,2   

  1. 1 National Engineering Research Center of Chemical Fertilizer Catalyst, School of Chemical Engineering, Fuzhou University, Fuzhou 350002, China;
    2 Qingyuan Innovation Laboratory, Quanzhou 362801, China;
    3 State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
  • Received:2021-06-30 Revised:2021-10-21 Online:2022-02-25 Published:2022-01-28
  • Contact: Haibo Zhu,E-mail address:haibo.zhu@fzu.edu.cn
  • Supported by:
    Financial supports of the National Natural Science Foundation of China (21878050, 22178062), Foundation of State Key Laboratory of Coal Conversion (J21-22-620) and Green Petrochemical Engineering Base of Intelligence Introduction for Innovation (111 Project D17005) are gratefully acknowledged.

Bimetallic PtSn nanoparticles confined in hierarchical ZSM-5 for propane dehydrogenation

Tianlei Wang1, Zhikang Xu1, Yuanyuan Yue1, Tinghai Wang1, Minggui Lin3, Haibo Zhu1,2   

  1. 1 National Engineering Research Center of Chemical Fertilizer Catalyst, School of Chemical Engineering, Fuzhou University, Fuzhou 350002, China;
    2 Qingyuan Innovation Laboratory, Quanzhou 362801, China;
    3 State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
  • 通讯作者: Haibo Zhu,E-mail address:haibo.zhu@fzu.edu.cn
  • 基金资助:
    Financial supports of the National Natural Science Foundation of China (21878050, 22178062), Foundation of State Key Laboratory of Coal Conversion (J21-22-620) and Green Petrochemical Engineering Base of Intelligence Introduction for Innovation (111 Project D17005) are gratefully acknowledged.

Abstract: A series of PtSn/hierarchical ZSM-5 catalysts were developed for propane dehydrogenation, in which the PtSn bimetallic particles are confined in the mesopores of hierarchical ZSM-5 zeolite. The synthesis of PtSn/hierarchical ZSM-5 catalysts was achieved via the loading of Pt and Sn species onto the hierarchical ZSM-5 catalysts that are obtained through a desilication of conventional ZSM-5. The PtSn/hierarchical ZSM-5 catalysts were fully characterized by XRD, N2 adsorption, STEM, XPS, and℃O-IR techniques, which reveals that highly dispersed PtSn bimetallic nanoparticles are enclosed into mesopores of hierarchical ZSM-5. The catalytic performance of PtSn/hierarchical ZSM-5 is greatly affected by the concentrations of alkali solution in the desilication process and Sn/Pt ratios in PtSn bimetallic particles. The PtSn1.00/ ZSM-5(0.8) catalyst shows the highest efficiency in propane dehydrogenation, which gives an initial conversion of 46% and selectivity of 98% at 570 ℃. The high efficiency in these PtSn/hierarchical ZSM-5 catalysts for propane dehydrogenation is mainly ascribed to the confinement of PtSn particles in the mesopores of hierarchical ZSM-5 zeolite.

Key words: Hierarchical ZSM-5, Propane dehydrogenation, Desilication, PtSn particles

摘要: A series of PtSn/hierarchical ZSM-5 catalysts were developed for propane dehydrogenation, in which the PtSn bimetallic particles are confined in the mesopores of hierarchical ZSM-5 zeolite. The synthesis of PtSn/hierarchical ZSM-5 catalysts was achieved via the loading of Pt and Sn species onto the hierarchical ZSM-5 catalysts that are obtained through a desilication of conventional ZSM-5. The PtSn/hierarchical ZSM-5 catalysts were fully characterized by XRD, N2 adsorption, STEM, XPS, and℃O-IR techniques, which reveals that highly dispersed PtSn bimetallic nanoparticles are enclosed into mesopores of hierarchical ZSM-5. The catalytic performance of PtSn/hierarchical ZSM-5 is greatly affected by the concentrations of alkali solution in the desilication process and Sn/Pt ratios in PtSn bimetallic particles. The PtSn1.00/ ZSM-5(0.8) catalyst shows the highest efficiency in propane dehydrogenation, which gives an initial conversion of 46% and selectivity of 98% at 570 ℃. The high efficiency in these PtSn/hierarchical ZSM-5 catalysts for propane dehydrogenation is mainly ascribed to the confinement of PtSn particles in the mesopores of hierarchical ZSM-5 zeolite.

关键词: Hierarchical ZSM-5, Propane dehydrogenation, Desilication, PtSn particles