PREPARATION OF ALUMINA GELS BY A NON-HYDROLYTIC SOL-GEL PROCESSING METHOD

被引：113

作者：

ACOSTA, S ^{[1
]}

CORRIU, RJP ^{[1
]}

LECLERCQ, D ^{[1
]}

LEFEVRE, P ^{[1
]}

MUTIN, PH ^{[1
]}

VIOUX, A ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,RHONE POULENC,CNRS,UMR 44,CASE 007,F-34095 MONTPELLIER 5,FRANCE

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 170卷 / 03期

关键词：

D O I：

10.1016/0022-3093(94)90052-3

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：

Monolithic alumina gels were prepared by a novel non-hydrolytic sol-gel route based on the condensation reaction between aluminum alkoxides Al(OR)3 and aluminum halides AlX3, through the formation of alkyl halide RX (X = Br, Cl; R = iso-propyl, sec- or ter-butyl), around 100-degrees-C. Samples were then calcined and were found to be amorphous up to about 750-degrees-C; they kept a high specific surface area to about 900-degrees-C. This delayed crystallization is correlated with the large number of five-coordinate aluminum sites measured in dried gels by Al-27 NMR spectroscopy.

引用

页码：234 / 242

页数：9

共 27 条

[1] ACOSTA S, IN PRESS J SOL GEL S
[2] MULTIDENTATE LEWIS-ACIDS - SYNTHESIS AND STRUCTURE OF COMPLEX ALUMINUM-CHLORIDE ALKOXIDES
BELANGERGARIEPY, F
HOOGSTEEN, K
SHARMA, V
WUEST, JD
[J]. INORGANIC CHEMISTRY, 1991, 30 (22) : 4140 - 4145
[3] Bradley D. C., 1959, J APPL CHEM-USSR, V9, P435, DOI 10.1002/jctb.5010090810
[4] THE PYROLYSIS OF METAL ALKOXIDES .2. KINETIC STUDIES ON ZIRCONIUM TETRA-TERT-AMYLOXIDE
BRADLEY, DC
FAKTOR, MM
[J]. TRANSACTIONS OF THE FARADAY SOCIETY, 1959, 55 (12): : 2117 - 2123
[5] METAL ALKOXIDES AS PRECURSORS FOR ELECTRONIC AND CERAMIC MATERIALS
BRADLEY, DC
[J]. CHEMICAL REVIEWS, 1989, 89 (06) : 1317 - 1322
[6] ALUMINUM COORDINATION AND LEWIS ACIDITY IN TRANSITION ALUMINAS
CHEN, FR
DAVIS, JG
FRIPIAT, JJ
[J]. JOURNAL OF CATALYSIS, 1992, 133 (02) : 263 - 278
[7] PREPARATION OF MONOLITHIC BINARY OXIDE GELS BY A NONHYDROLYTIC SOL-GEL PROCESS
CORRIU, R
LECLERCQ, D
LEFEVRE, P
MUTIN, PH
VIOUX, A
[J]. CHEMISTRY OF MATERIALS, 1992, 4 (05) : 961 - 963
[8] PREPARATION OF MONOLITHIC GELS FROM SILICON HALIDES BY A NONHYDROLYTIC SOL-GEL PROCESS
CORRIU, RJP
LECLERCQ, D
LEFEVRE, P
MUTIN, PH
VIOUX, A
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1992, 146 (2-3) : 301 - 303
[9] PREPARATION OF MONOLITHIC METAL-OXIDE GELS BY A NON-HYDROLYTIC SOL-GEL PROCESS
CORRIU, RJP
LECLERCQ, D
LEFEVRE, P
MUTIN, PH
VIOUX, A
[J]. JOURNAL OF MATERIALS CHEMISTRY, 1992, 2 (06) : 673 - 674
[10] COORDINATION-COMPOUNDS OF ALUMINUM HALOGENIDES - NOTE ON THEIR STRUCTURAL-PROPERTIES AND ANALYTICAL METHODS
DALIBART, M
DEROUAULT, J
[J]. COORDINATION CHEMISTRY REVIEWS, 1986, 74 : 1 - 51

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