Deposition and interaction of phosphododecatungstate on a silica gel surface modified with a silane coupling agent having anilino groups

被引：35

作者：

Kamada, M ^{[1
]}

Kominami, H ^{[1
]}

Kera, Y ^{[1
]}

机构：

[1] KINKI UNIV,FAC SCI & ENGN,DEPT APPL CHEM,OSAKA 577,JAPAN

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1996年 / 182卷 / 01期

关键词：

silane coupling agent; modified SiO2; heteropoly acid; acid-base interaction; dispersion of PW12;

D O I：

10.1006/jcis.1996.0464

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silica gel was chemically modified with (3-anilinopropyl) trimethoxysilane (AnPS) under a reflux of toluene (abbreviated as AnPS-SiO2). The adsorptivity of phosphododecatungstate anion (PW12) on AnPS-SiO2 from an aqueous solution was investigated quantitatively, The amounts adsorbed rose quite steeply to a coverage (theta) of 0.90 with increasing PW12 concentrations in solution, while they rose gradually to 0.33 on the unmodified SiO2 as a reference, It was verified, from the changes in bands due to the anilino group in FT-IR spectra and XP-spectra, that such a strong affinity was caused by acid-base interaction of PW12 with the amino group of AnPS-SiO2. (C) 1996 Academic Press, Inc.

引用

页码：297 / 300

页数：4

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