STRUCTURAL CHARACTERIZATION OF HYBRID MATERIALS OBTAINED FROM ZIRCONIUM N-PROPOXIDE AND 1,2-ETHANEDIOL

被引:8
作者
CHAIBI, J
HENRY, M
ZARROUK, H
GHARBI, N
LIVAGE, J
机构
[1] UNIV PARIS 06,CHIM MAT CONDENSEE LAB,F-75252 PARIS 05,FRANCE
[2] UNIV TUNIS,CHIM MAT LAB,TUNIS,TUNISIA
关键词
D O I
10.1016/0022-3093(94)90096-5
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Zirconium n-propoxide Zr(OPr(n))4 has been chemically modified by 1,2-ethanediol with molar ratio r = 0.5, 1 and 2. The properties of the hybrid organic-inorganic materials obtained after drying at 100-degrees-C for 24 h have been measured by thermal analysis, X-ray diffraction, infrared spectroscopy and C-13 NMR with cross-polarization at magic angle spinning. Chemical modification of the zirconium precursor at a molecular level has been clearly detected, with a bridging coordination mode for 1,2-ethanediol. Application of a structure-dependent version of the partial charge model to the prediction of C-13 chemical shifts in modified zirconium alkoxides is also described.
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页码:1 / 10
页数:10
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