Interaction of water and aniline adsorbed onto Na-AlMCM-41 and Na-AlSBA-15 catalysts as hosts materials

被引：16

作者：

Anunziata, Oscar A. ^{[1
]}

Costa, Marcos B. Gomez ^{[1
]}

Martinez, Maria L. ^{[1
]}

机构：

[1] Univ Tecnol Nacl, Grp Fisicoquim Nuevos Mat, CITeQ, Fac Corboda, RA-5016 Cordoba, Argentina

来源：

CATALYSIS TODAY | 2008年 / 133卷 / 897-905期

关键词：

aniline; MCM-41; SBA-15; mesoporous materials; polyaniline;

D O I：

10.1016/j.cattod.2007.12.073

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work we study the water adsorption and adsorbed aniline interaction onto the mesoporous materials Na-AlMCM-41, compared with aniline adsorption onto Na-AISBA-15. The adsorption of aniline on Na-AlMCM-41 and Na-AlSBA-15 materials, synthesized by us, has been characterized by thermo-infrared spectroscopy analysis. The FTIR analysis of adsorbed aniline on Na-AISBA-15 shows the characteristic bands ascribed to N-H-2 bending and two C-C ring stretching at 1622-1625, 1604 and 1498.6 cm(-1), respectively; the results are similar to the adsorbed aniline on Na-AlMCM-41 host. Mainly, aniline molecules would be bounded through weak pi interactions onto the mesostructures. The organic molecules could be held stronger on Na-AlSBA-15 than on Na-AlMCM-41. Two possible modes of adsorption of water have been identified on Na-AlMCM-41 and Na-AlSBA-15, which are characteristic of water adsorbed on the material. Different associations between aniline and hydrated and non-hydrated mesostructures have been evaluated in order to favor the posterior in-situ polymerization of adsorbed aniline. Polyaniline/SBA-15 composite, obtained by an in-situ polymerization technique, has been characterized by infrared spectroscopy, UV-vis spectroscopy and surface area studies. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：897 / 905

页数：9

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