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Dealumination of Y zeolite through an economic and eco-friendly defect-engineering strategy
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  • Peng Dong,
  • Jinyu Zhang,
  • Tiesen Li,
  • Chan Wang,
  • Jingdong Xu,
  • Tinghai Wang,
  • Yuanyuan Yue,
  • Lilong Jiang,
  • Xiaojun Bao
Peng Dong
Fuzhou University
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Jinyu Zhang
Fuzhou University
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Tiesen Li
Fuzhou University
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Chan Wang
Fuzhou University
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Jingdong Xu
Sinochem Quanzhou Energy Technology Co Ltd
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Tinghai Wang
Fuzhou University
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Yuanyuan Yue

Corresponding Author:yueyy@fzu.edu.cn

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Lilong Jiang
Fuzhou University
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Xiaojun Bao
Fuzhou University
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Abstract

In this article, a sustainable defect-engineering strategy for dealumination of Y zeolite is described. This strategy includes the green synthesis of a well-crystallized Y zeolite with point defects arising from the incorporation of Fe atoms by using a Fe-containing perlite and the subsequent preparation of ultra-stable Y (USY) zeolite by effective dealumination. The systematic characterizations verify that Fe atoms originally existing in the perlite are incorporated into the as-synthesized Y zeolite and function as point defects, leading to the distortion of framework Al. The step-by-step investigation of the dealumination process shows that vacancies are formed by the extraction of framework Fe in the ammonium exchange, and the framework dealumination is promoted under the combined effect of the distorted framework Al and the formed vacancies during the steaming treatment. The resulting USY zeolite owns excellent features in (hydro)thermal stability, pore structure and acid property, and thus exhibits outstanding catalytic cracking performance.
03 Mar 2023Submitted to AIChE Journal
09 Mar 2023Submission Checks Completed
09 Mar 2023Assigned to Editor
09 Mar 2023Review(s) Completed, Editorial Evaluation Pending
11 Mar 2023Reviewer(s) Assigned
11 Apr 2023Editorial Decision: Revise Major
11 May 20231st Revision Received
27 May 2023Submission Checks Completed
27 May 2023Assigned to Editor
27 May 2023Review(s) Completed, Editorial Evaluation Pending
30 May 2023Reviewer(s) Assigned
01 Jul 2023Editorial Decision: Accept