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Integrating Pore Interconnectivity and Adaptability in a Single Crystal Hierarchical Zeolite for Liquid Alkylation
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  • Baoyu Liu,
  • Jiajin Huang,
  • Zhantu Liao,
  • Chongzhi Zhu,
  • Qiaoli Chen,
  • Guan Sheng,
  • Yihan Zhu,
  • Yi Huang,
  • Jinxiang Dong
Jiajin Huang
Guangdong University of Technology - University Town Campus
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Zhantu Liao
Guangdong University of Technology - University Town Campus
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Chongzhi Zhu
Zhejiang University of Technology
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Qiaoli Chen
Zhejiang University of Technology
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Guan Sheng
King Abdullah University of Science and Technology
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Yihan Zhu
Zhejiang University of Technology
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Yi Huang
The University of Edinburgh
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Jinxiang Dong
Guangdong University of Technology - University Town Campus
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Abstract

Zeolite belongs to one of the most important families of solid acid catalysts in chemical industries. It is however severely constrained by the diffusion limitation for bulky molecules, the lack of multi-functionality for sequential reactions and pore adaptability towards specific adsorbates, due to the small micropore size and simple aluminosilicate framework. Introducing mesopores into the zeolitic framework towards hierarchical zeolites is prevailing, but usually suffers from compromised crystallinity as well as insufficient interconnectivity and openness of mesopores. Herein, a novel of acid-redox co-functionalized single-crystalline zeolite with highly open and interconnected mesopores is designed and fabricated. As a proof-of-concept study, we integrate the solid acid and Fe-oxy redox sites in a hierarchical MEL zeolite with well characterized microporosity and mesoporosity. It exhibits superior activity and stability towards the alkylation between mesitylene with benzyl alcohol, arising from greatly facilitated intracrystalline molecular diffusion, mitigated metal leaching and optimized adsorbate-pore wall interactions.

Peer review status:IN REVISION

30 Mar 2020Submitted to AIChE Journal
03 Apr 2020Assigned to Editor
03 Apr 2020Submission Checks Completed
13 Apr 2020Reviewer(s) Assigned
03 Sep 2020Editorial Decision: Revise Major