HYDROLYSIS OF MIXED TITANIUM AND ZIRCONIUM ALKOXIDES BY AN ESTERIFICATION REACTION

被引：31

作者：

LAAZIZ, I ^{[1
]}

LARBOT, A ^{[1
]}

JULBE, A ^{[1
]}

GUIZARD, C ^{[1
]}

COT, L ^{[1
]}

机构：

[1] ECOLE NATL SUPER CHIM MONTPELLIER,PHYSICOCHIM MAT LAB,CNRS,URA 1312,8 RUE ECOLE NORMALE,F-34053 MONTPELLIER 1,FRANCE

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1992年 / 98卷 / 02期

关键词：

D O I：

10.1016/S0022-4596(05)80250-6

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Hydrolysis of mixed Ti(OiPr)4 and Zr(OnPr)4 in n-PrOH has conducted to crystals, gels, or precipitates, depending on the quantity of acetic acid added for the esterification reaction. A structural model of Zr6Ti3(OPr)16(OAc)8O6 clusters is proposed and shows various coordination numbers for the metallic atoms (6, 7, and 8 for Zr and 6 for Ti) and acetate or propyl bridges linking these atoms. A comparative study by IR and 13C NMR spectroscopies shows the molecular structure similarity of crystallized clusters and polymeric species in the gel. Molecular clusters may be considered as intermediate species during gelation. A thermal study of crystals and gel decomposition has been performed. © 1992 Academic Press, Inc.

引用

页码：393 / 403

页数：11

共 15 条

[1] ACETATES AND ACETATO-COMPLEXES .2. SPECTROSCOPIC STUDIES [J].

ALCOCK, NW ;

TRACY, VM ;

WADDINGTON, TC .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1976, (21) :2243-2246

[2]

BRADLEY DC, 1978, METAL ALKOXIDES, P195

[3]

Brinker C. J., 1990, SOL GEL SCI PHYS CHE, P908

[4] SOL-GEL THIN-FILM FORMATION [J].

BRINKER, CJ ;

HURD, AJ ;

FRYE, GC ;

WARD, KJ ;

ASHLEY, CS .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1990, 121 (1-3) :294-302

[5] HYDROLYSIS OF TITANIUM ALKOXIDES - MODIFICATION OF THE MOLECULAR PRECURSOR BY ACETIC-ACID [J].

DOEUFF, S ;

HENRY, M ;

SANCHEZ, C ;

LIVAGE, J .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1987, 89 (1-2) :206-216

[6]

Hench L.L., 1986, SCI CERAMIC CHEM PRO

[7]

LAAZIZ I, 1990, THESIS U SCI TECHNIQ

[8]

LAAZIZ PI, 1990, ACTA CRYSTALLOGR C, V46, P2332

[9] HYDROLYSIS OF ZIRCONIUM N-PROPOXIDE - STUDY BY GAS-CHROMATOGRAPHY [J].

LARBOT, A ;

ALARY, JA ;

GUIZARD, C ;

COT, L ;

GILLOT, J .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 104 (2-3) :161-163

[10]

Mackenzie J.D., 1988, ULTRASTRUCTURE PROCE

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