LAPSE:2024.1875v1
Published Article
LAPSE:2024.1875v1
Direct Epoxidation of Hexafluoropropene Using Molecular Oxygen over Cu-Impregnated HZSM-5 Zeolites
August 23, 2024
Abstract
This study explores a novel method of directly epoxidizing hexafluoropropene with molecular oxygen under gaseous conditions using a Cu/HZSM-5 catalytic system (Cu/HZ). An in-depth investigation was conducted on the catalytic performance of Cu-based catalysts on various supports and Cu/HZ catalysts prepared under different conditions. Cu/HZ catalysts exhibited better catalytic performance than other porous medium-supported Cu catalysts for the epoxidation of hexafluoropropene by molecular oxygen. The highest propylene oxide yield of 35.6% was achieved over the Cu/HZ catalyst prepared under conditions of 350 °C with a Cu loading of 1 wt%. By applying characterization techniques including XRD, BET, NH3-TPD, and XPS to different catalyst samples, the relationship between the interaction of Cu2+ and HZSM-5 and the reactivity of the catalyst was studied, thereby elucidating the influence of calcination temperature and loading on the reactivity. Finally, we further proposed the possible mechanism of how isolated Cu2+ and acid sites improve catalytic performance.
This study explores a novel method of directly epoxidizing hexafluoropropene with molecular oxygen under gaseous conditions using a Cu/HZSM-5 catalytic system (Cu/HZ). An in-depth investigation was conducted on the catalytic performance of Cu-based catalysts on various supports and Cu/HZ catalysts prepared under different conditions. Cu/HZ catalysts exhibited better catalytic performance than other porous medium-supported Cu catalysts for the epoxidation of hexafluoropropene by molecular oxygen. The highest propylene oxide yield of 35.6% was achieved over the Cu/HZ catalyst prepared under conditions of 350 °C with a Cu loading of 1 wt%. By applying characterization techniques including XRD, BET, NH3-TPD, and XPS to different catalyst samples, the relationship between the interaction of Cu2+ and HZSM-5 and the reactivity of the catalyst was studied, thereby elucidating the influence of calcination temperature and loading on the reactivity. Finally, we further proposed the possible mechanism of how isolated Cu2+ and acid sites improve catalytic performance.
Record ID
Keywords
epoxidation, hexafluoropropene, hexafluoropropylene oxide, modified HZSM-5
Subject
Suggested Citation
Huang JM, Guo J, Xu C, Su A, Wu KJ, He CH. Direct Epoxidation of Hexafluoropropene Using Molecular Oxygen over Cu-Impregnated HZSM-5 Zeolites. (2024). LAPSE:2024.1875v1
Author Affiliations
Huang JM: Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Zhejiang University-Quzhou, Quzhou 324000, China
Guo J: Zhejiang Anglikang Pharmaceutical Co., Ltd., Shaoxing 312400, China
Xu C: Zhejiang Anglikang Pharmaceutical Co., Ltd., Shaoxing 312400, China
Su A: State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Chemistry-Synthesis Technology of Zhejiang Province, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China [ORCID]
Wu KJ: Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Zhejiang University-Quzhou, Quzhou 324000, China
He CH: Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Zhejiang University-Quzhou, Quzhou 324000, China [ORCID]
Guo J: Zhejiang Anglikang Pharmaceutical Co., Ltd., Shaoxing 312400, China
Xu C: Zhejiang Anglikang Pharmaceutical Co., Ltd., Shaoxing 312400, China
Su A: State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Chemistry-Synthesis Technology of Zhejiang Province, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China [ORCID]
Wu KJ: Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Zhejiang University-Quzhou, Quzhou 324000, China
He CH: Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Zhejiang University-Quzhou, Quzhou 324000, China [ORCID]
Journal Name
Processes
Volume
12
Issue
7
First Page
1520
Year
2024
Publication Date
2024-07-19
ISSN
2227-9717
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PII: pr12071520, Publication Type: Journal Article
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LAPSE:2024.1875v1
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https://doi.org/10.3390/pr12071520
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[v1] (Original Submission)
Aug 23, 2024
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Aug 23, 2024
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