Removal of copolymer template from SBA-15 studied by 1H MAS NMR

被引：35

作者：

Bae, Yoon Kyung ^{[1
]}

Han, Oc Hee ^{[1
]}

机构：

[1] Daegu Ctr, Korean Basic Sci Inst, Analys Res Div, Taegu 702701, South Korea

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2007年 / 106卷 / 1-3期

关键词：

solid-state NMR spectroscopy; SBA-15; organic template removal; mesoporous materials; Surfactants; porous materials;

D O I：

10.1016/j.micromeso.2007.02.030

中图分类号：

O69 [应用化学];

学科分类号：

081704 [应用化学];

摘要：

SBA-15 samples before and after copolymer template removal by thermal treatment or solvent washing were checked with H-1 magic angle spinning nuclear magnetic resonance which was proved to be the most sensitive technique to check the complete removal of organic templates. During thermal treatment surface hydroxyl groups exchanging with waters were reduced and isolated silanol groups were increased. Washing in ethanol was 3 times more effective than in water to remove P123. SBA-15 structure changed to less ordered state in the aspect of chemical bonding by thermal treatment, but did not by washing. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：304 / 307

页数：4

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