Probing Interactions of γ-Alumina with Water via Multinuclear Solid-State NMR Spectroscopy.
Probing Interactions of γ-Alumina with Water via Multinuclear Solid-State NMR Spectroscopy.
复制标题
通过多核固态核磁共振波谱探测 γ-氧化铝与水的相互作用
DOI:
10.1002/cctc.201901838
复制
发表时间:
2020-03-19
期刊:
影响因子:
4.5
通讯作者:
Peng L
中科院分区:
文献类型:
--
作者:
Shen L;Wang Y;Du JH;Chen K;Lin Z;Wen Y;Hung I;Gan Z;Peng L
Interaction of γ-alumina with water are important in controlling its structure and catalytic properties. We apply solid-state multinuclear NMR spectroscopy to investigate this interaction by monitoring 1H and 17O spectra in real-time. Surface-selective detection is made possible by adsorbing 17O-enriched water on γ-alumina nanorods. Structural evolution on the surface was selectively probed by 1H/17O double resonance NMR and 27Al NMR at ultrahigh 35.2 T magnetic field. Formation of hydroxyl species on the surface of nanorods is rapid upon the exposure of water, which involves low coordinated aluminum ions with doubly bridging and isolated hydroxyl species being generated first. Fast exchange occurs between oxygen atoms in the water molecules and bare surface sites, indicating high reactivity of these oxygen species. These results provide new insights into the structure and dynamics on the surface of γ-alumina and the methods applied here can be extended to study the interaction of other oxides with water.
登录
查看更多内容
影响因子:
3.7
作者:
Castro, Ricardo H. R.;Quach, Dat V.
通讯作者:
Quach, Dat V.
DOI:
10.1016/0584-8539(93)80092-o
发表时间:
1993-05-01
影响因子:
4.4
作者:
DYER, C;HENDRA, PJ;RANHEIMER, M
通讯作者:
RANHEIMER, M
影响因子:
2.8
作者:
Lee, MH;Cheng, CF;Klinowski, J
通讯作者:
Klinowski, J
影响因子:
7.3
作者:
Liu, Ying;Huang, Fei-Yang;Wan, Hui-Lin
通讯作者:
Wan, Hui-Lin
影响因子:
12.9
作者:
Cai, Weimeng;Zhang, Shengen;Xie, Zaiku
通讯作者:
Xie, Zaiku