| Title: | Illustrating new understanding of adsorbed water on silica for inducing tetrahedral cobalt(II) for propane dehydrogenation |
| Author(s): | Huang Z; He D; Deng W; Jin G; Li K; Luo Y; |
| Address: | "Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, P. R. China. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, P. R. China. The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province, Kunming, 650500, P. R. China. The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province, Kunming, 650500, P. R. China. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, P. R. China. dedong.he@qq.com. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, P. R. China. dedong.he@qq.com. The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province, Kunming, 650500, P. R. China. dedong.he@qq.com. The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province, Kunming, 650500, P. R. China. dedong.he@qq.com. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, P. R. China. environcatalysis@kust.edu.cn. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, P. R. China. environcatalysis@kust.edu.cn. The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province, Kunming, 650500, P. R. China. environcatalysis@kust.edu.cn. The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province, Kunming, 650500, P. R. China. environcatalysis@kust.edu.cn" |
| DOI: | 10.1038/s41467-022-35698-0 |
| ISSN/ISBN: | 2041-1723 (Electronic) 2041-1723 (Linking) |
| Abstract: | "Highly dispersed metal sites on the surface of silica, achieved from immobilization of metal precursor within hydroxyl groups, has gained increasing attention in the field of heterogeneous catalyst. However, the special role of adsorbed water derived by hydroxyl groups on the silica is generally ignored. Herein, a new understanding of adsorbed water on the formation of highly dispersed tetrahedral Co(II) (T(d)-cobalt(II)) sites is illustrated. It is indicated that sufficient adsorbed water induces the transformation of precursor of Co(NO(3))(2) into intermediate of [Co(H(2)O)(6)](2+). Subsequently, [Co(H(2)O)(6)](2+) makes the highly dispersed T(d)-cobalt(II) sites to be available during direct H(2)-reduction process. A systematic characterization and DFT calculation prove the existence of the adsorbed water and the importance of the intermediate of [Co(H(2)O)(6)](2+), respectively. The as-synthesized catalyst is attempted to the propane dehydrogenation, which shows better reactivity when compared with other reported Co based catalysts" |
| Notes: | "PubMed-not-MEDLINEHuang, Zijun He, Dedong Deng, Weihua Jin, Guowu Li, Ke Luo, Yongming eng 21966018, 22006059, 21968015, 42030712/National Natural Science Foundation of China (National Science Foundation of China)/ 202101AS070026/Applied Basic Research Key Project of Yunnan (Applied Basic Research Key Project of Yunnan Province)/ England 2023/01/08 Nat Commun. 2023 Jan 6; 14(1):100. doi: 10.1038/s41467-022-35698-0" |
