Stabilizing F-Al-O active center via confinement of Al<sub>2</sub>O<sub>3</sub> in SiC framework for conversion of 1,1-difluoroethane greenhouse gas

doi:10.1016/j.jfluchem.2024.110257

IMR OpenIR

	Stabilizing F-Al-O active center via confinement of Al₂O₃ in SiC framework for conversion of 1,1-difluoroethane greenhouse gas
	Wei, Xiaoli 1; Sun, Yiwei 1; Jiang, Jianhai 1; Wang, Zhen 1; Zhang, Wei 1; Liu, Bing 1; Wang, Shucheng 3; Yang, Xiaodan 2; Yu, Wanjin 3; Zhang, Jianjun 3; Han, Wenfeng 1
通讯作者	Yang, Xiaodan(xdyang@imr.ac.cn) ; Yu, Wanjin(yuwanjin1@sinochem.com) ; Zhang, Jianjun(zhangjianjun@sinochem.com) ; Han, Wenfeng(hanwf@zjut.edu.cn)
	2024-02-01
发表期刊	JOURNAL OF FLUORINE CHEMISTRY
ISSN	0022-1139
卷号	274 页码:8
摘要	Al2O3 exhibits high activity for the resource utilization of potent greenhouse gases, hydrofluorocarbons via dehydrofluorination or F/Cl exchange. However, it experiences completely fluorination under corrosive HF environment, leading to thorough fluorination of F-Al-O active site into F-Al-F, accompanied with serious carbon deposition. In this work, we successfully confined Al2O3 in SiC (Al2O3@SiC) via treating Al2O3/SiC under high temperatures (>800 degrees C). The results showed that different with simple loaded Al2O3(Al2O3/SiC), during high temperature treatment, reaction between Al2O3 and SiC occurred, leading to the confinement effect. Then, contributed by the interaction, desired F-Al-O species could be stabilized on the surface of SiC. While for Al2O3/SiC, it thoroughly turned into AlF3 under identical reactive conditions, leading to inferior stability during CH3CHF2 dehydrofluorination. Furthermore, the reaction rate of 5 %Al2O3@SiC is nearly up to 4 folds higher than that of traditional AlF3. Facilitated by the suitable Lewis acid intensity, less carbon deposition formed on Al2O3@SiC. Thus, constructing strong interaction between F-Al-O and stable SiC provides a potential strategy to stabilize unstable active centers.
关键词	SiC Dehydrofluoriantion Greenhouse gases Hydrofluorocarbons F-Al-O
资助者	Scientific Research Project of Education Department of Zhejiang Province ; National Natural Science Foundation of China
DOI	10.1016/j.jfluchem.2024.110257
收录类别	SCI
语种	英语
资助项目	Scientific Research Project of Education Department of Zhejiang Province[Y202352268] ; National Natural Science Foundation of China[22308328]
WOS研究方向	Chemistry
WOS类目	Chemistry, Inorganic & Nuclear ; Chemistry, Organic
WOS记录号	WOS:001184093400001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184834
专题	中国科学院金属研究所
通讯作者	Yang, Xiaodan; Yu, Wanjin; Zhang, Jianjun; Han, Wenfeng
作者单位	1.Zhejiang Univ Technol, Inst Ind Catalysis, State Key Lab Breeding Base Green Chem Synth Techn, Chaowang Rd 18, Hangzhou 310014, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Zhejiang Res Inst Chem Ind, State Key Lab Fluorinated Greenhouse Gases Replace, Tianmushan Rd 387, Hangzhou 310032, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Wei, Xiaoli,Sun, Yiwei,Jiang, Jianhai,et al. Stabilizing F-Al-O active center via confinement of Al₂O₃ in SiC framework for conversion of 1,1-difluoroethane greenhouse gas[J]. JOURNAL OF FLUORINE CHEMISTRY,2024,274:8.
APA	Wei, Xiaoli.,Sun, Yiwei.,Jiang, Jianhai.,Wang, Zhen.,Zhang, Wei.,...&Han, Wenfeng.(2024).Stabilizing F-Al-O active center via confinement of Al₂O₃ in SiC framework for conversion of 1,1-difluoroethane greenhouse gas.JOURNAL OF FLUORINE CHEMISTRY,274,8.
MLA	Wei, Xiaoli,et al."Stabilizing F-Al-O active center via confinement of Al₂O₃ in SiC framework for conversion of 1,1-difluoroethane greenhouse gas".JOURNAL OF FLUORINE CHEMISTRY 274(2024):8.