Citation: ZHANG Lei, LI Yu-Zhen, LI Li-Chun, HAN Wen-Feng, LI Ying, TANG Hao-Dong. Fe-Doped MgF₂ Catalyst: Preparation by Sol-Gel Method and Performance in Dehydrogenation of 1, 1-Difluoroalkane (R152a)[J]. Chinese Journal of Inorganic Chemistry, ;2021, 37(1): 39-46. doi: 10.11862/CJIC.2021.021 shu

Fe-Doped MgF₂ Catalyst: Preparation by Sol-Gel Method and Performance in Dehydrogenation of 1, 1-Difluoroalkane (R152a)

Zhejiang University of Technology, College of Chemical Engineering, Hangzhou 310014, China

Corresponding author: TANG Hao-Dong, tanghd@zjut.edu.cn
Received Date: 3 June 2020
Revised Date: 18 November 2020

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Herein, the deactivation problem of the MgF₂ catalyst was solved via doping of Fe³⁺ into the catalyst. A series of Fe³⁺ doped MgF₂ catalysts with different dopant concentrations were prepared via sol-gel method. The physio-chemical properties of the FeF₃/MgF₂ catalyst were examined by means of N₂ gas adsorption-desorption, X-ray diffraction (XRD), energy dispersive X -ray spectrometer (EDS) and NH₃ -temperature programmed desorption (NH₃-TPD). Results show that small amount (molar fraction was less than 20%) of Fe³⁺ doping into MgF₂ catalyst can effectively reduce the crystalline size of the catalyst. With concentration of Fe³⁺ below 20%, the specific surface area, surface acidity and catalytic activity towards the dehydrofluorination reaction of 1, 1-difluoroethane (R152a, C₂H₄F₂) increased with the increasing of dopant concentration. In contrast, FeF₃/MgF₂ catalyst deactivation occurred when dopant concentration was greater than 20%.
- sol-gel method,
- MgF₂,
- Lewis acid,
- Fe³⁺ doping,
- dehydrofluorination
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Fe-Doped MgF2 Catalyst: Preparation by Sol-Gel Method and Performance in Dehydrogenation of 1, 1-Difluoroalkane (R152a)

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通讯作者: 陈斌, bchen63@163.com

Fe-Doped MgF₂ Catalyst: Preparation by Sol-Gel Method and Performance in Dehydrogenation of 1, 1-Difluoroalkane (R152a)