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Author:

Wang, Hongmei (Wang, Hongmei.) | Wang, Huiqiu (Wang, Huiqiu.) | Hao, Wangshu (Hao, Wangshu.) | Wang, Sen (Wang, Sen.) | Nie, Kaiqi (Nie, Kaiqi.) | Yang, Yuanli (Yang, Yuanli.) | Chen, Ziheng (Chen, Ziheng.) | Wang, Ning (Wang, Ning.) | Cui, Chaojie (Cui, Chaojie.) | Yan, Binhang (Yan, Binhang.) | Qian, Weizhong (Qian, Weizhong.)

Indexed by:

EI Scopus SCIE

Abstract:

The catalytic conversion of light paraffins into ethylene and propylene represents a highly efficient process, primarily due to their abundant availability and low cost. These factors confer a significant economic advantage, making this approach an attractive option for large-scale industrial applications. In this work, we designed a novel core-shell structured bifunctional catalyst of GaZ5-20Si, which combined reaction pathway modulation and shape-selective catalysis to simultaneously convert n-pentane into light olefins (ethylene, propylene, and butylene) and para-xylene as dominant products. By coating an external SiO2 layer, the external surface acid sites of the zeolite are successfully passivated, thereby suppressing the aromatic cycle and side reactions such as alkylation, which reduces catalyst coke formation and extends catalyst life. The total selectivity for light olefins and para-xylene reaches up to 63%, with para-xylene selectivity in the xylene fraction reaching as high as 93%. Moreover, no significant decline in catalytic performance was observed in an 80-hour reaction-regeneration cycle test. This work introduces an effective "SiO2 coating" strategy, enriching the pathways on the valueadded utilization of n-pentane.

Keyword:

b -Axis ZSM-5 Para-xylene Olefins Core-shell ZSM-5 n -Pentane conversion Bifunctional catalyst

Author Community:

  • [ 1 ] [Wang, Hongmei]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
  • [ 2 ] [Wang, Huiqiu]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
  • [ 3 ] [Nie, Kaiqi]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
  • [ 4 ] [Chen, Ziheng]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
  • [ 5 ] [Cui, Chaojie]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
  • [ 6 ] [Yan, Binhang]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
  • [ 7 ] [Qian, Weizhong]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
  • [ 8 ] [Hao, Wangshu]Ordos Lab, Ordos 017000, Inner Mongolia, Peoples R China
  • [ 9 ] [Cui, Chaojie]Ordos Lab, Ordos 017000, Inner Mongolia, Peoples R China
  • [ 10 ] [Qian, Weizhong]Ordos Lab, Ordos 017000, Inner Mongolia, Peoples R China
  • [ 11 ] [Wang, Sen]Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, POB 165, Taiyuan 030001, Shanxi, Peoples R China
  • [ 12 ] [Yang, Yuanli]Beijing Univ Technol, Fac Environm & Life, Beijing 100124, Peoples R China
  • [ 13 ] [Wang, Ning]Beijing Univ Technol, Fac Environm & Life, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Wang, Huiqiu]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China;;[Cui, Chaojie]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China;;[Qian, Weizhong]Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China

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Source :

CHEMICAL ENGINEERING JOURNAL

ISSN: 1385-8947

Year: 2025

Volume: 510

1 5 . 1 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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