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

doi:10.1016/j.cjche.2021.11.020

中国化学工程学报 ›› 2022, Vol. 41 ›› Issue (1): 384-391.DOI: 10.1016/j.cjche.2021.11.020

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

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

Tianlei Wang¹, Zhikang Xu¹, Yuanyuan Yue¹, Tinghai Wang¹, Minggui Lin³, Haibo Zhu^1,2

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

收稿日期:2021-06-30 修回日期:2021-10-21 出版日期:2022-01-28 发布日期:2022-02-25
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.

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

Tianlei Wang¹, Zhikang Xu¹, Yuanyuan Yue¹, Tinghai Wang¹, Minggui Lin³, Haibo Zhu^1,2

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:2022-01-28 Published:2022-02-25
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.

摘要/Abstract

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 PtSn_1.00/ 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

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 PtSn_1.00/ 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

Tianlei Wang, Zhikang Xu, Yuanyuan Yue, Tinghai Wang, Minggui Lin, Haibo Zhu. Bimetallic PtSn nanoparticles confined in hierarchical ZSM-5 for propane dehydrogenation[J]. 中国化学工程学报, 2022, 41(1): 384-391.

Tianlei Wang, Zhikang Xu, Yuanyuan Yue, Tinghai Wang, Minggui Lin, Haibo Zhu. Bimetallic PtSn nanoparticles confined in hierarchical ZSM-5 for propane dehydrogenation[J]. Chinese Journal of Chemical Engineering, 2022, 41(1): 384-391.

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

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

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