1st International Conference on New Material and Chemical Industry | |
XPS and NMR analysis on 12CaO?7Al2O3 | |
材料科学;化学工业 | |
Pan, R.K.^1,2 ; Feng, S.^2 ; Tao, H.Z.^2 | |
School of Materials Science and Engineering, Hubei University, Wuhan | |
430062, China^1 | |
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan | |
430070, China^2 | |
关键词: Bridging oxygen; Coordination number; Crystallization temperature; Glass network; Magic angle spinning nuclear magnetic resonance spectroscopy; Melt quenching method; NMR analysis; Non-bridging oxygen; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012017/pdf DOI : 10.1088/1757-899X/167/1/012017 |
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学科分类:材料科学(综合) | |
来源: IOP | |
【 摘 要 】
12CaO•7Al2O3(C12A7) glass was prepared by the melt quenching method. The glass transition temperature (Tg) and the crystallization temperature (Tc) of C12A7 glass are about 1050 K and 1194 K, respectively, measured by the differential scanning calorimetry (DSC). The structure of C12A7 glass was investigated by X-ray photoelectron spectroscopy (XPS) as well as magic angle spinning-nuclear magnetic resonance spectroscopy (MAS-NMR). Analysis shows that Al coordination number is about four in C12A7 glass, in which AlO4tetrahedrons and bridging oxygens (BO) constitute the glass network. Ca2+produces a few of non-bridging oxygens (NBO), which become neighbours of Al.
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