Chemically modified ceramic membranes

被引：58
作者：
Caro, J [1 ]
Noack, M [1 ]
Kolsch, P [1 ]
机构：
[1] Inst Angew Chem Berlin Adlershof EV, D-12484 Berlin, Germany
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 1998年 / 22卷 / 1-3期
关键词：
permeation; permselectivity; ceramic membrane; TEOS; silylation; phosphorylation;
D O I：
10.1016/S1387-1811(98)00107-3
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Commercial ultrafiltration ceramic filters have been modified by chemical treatment. The gamma-Al2O3 top layer of the asymmetric ceramic filter was modified (I) by in situ hydrolysis of tetraethylorthosilicate, giving a hydrophilic nanoporous SiOx top layer rich in Si-OH, (2) by silylation of the gamma-Al2O3 layer, providing an organophilic functionalization, and (3) by reaction of the gamma-Al2O3 layer with alkyl/aryl phosphonic acids, resulting in an organophobic behaviour. By these chemical treatments both a pore narrowing and a hydrophilic/hydrophobic functionalization can be achieved. Permeation results of single gases and pervaporation data of liquid mixtures on the novel membranes are presented. (C) 1998 Elsevier Science B.V. All rights reserved.
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收藏
页码：321 / 332
页数：12
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