Stabilizing F-Al-O active center via confinement of Al2O3 in SiC framework for conversion of 1,1-difluoroethane greenhouse gas
文献类型：期刊论文
| 作者 | Wei, Xiaoli1; Sun, Yiwei1; Jiang, Jianhai1; Wang, Zhen1; Zhang, Wei1; Liu, Bing1; Wang, Shucheng3; Yang, Xiaodan2; Yu, Wanjin3; Zhang, Jianjun3 |
| 刊名 | JOURNAL OF FLUORINE CHEMISTRY
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 274页码:8 |
| 关键词 | SiC Dehydrofluoriantion Greenhouse gases Hydrofluorocarbons F-Al-O |
| ISSN号 | 0022-1139 |
| DOI | 10.1016/j.jfluchem.2024.110257 |
| 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) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:001184093400001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Scientific Research Project of Education Department of Zhejiang Province ; National Natural Science Foundation of China |
| 源URL |  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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