Dispersion measurement of heteropoly acid supported on KIT-1 mesoporous material

被引：26

作者：

Kim, WG

Kim, MW

Kim, JH

Seo, G ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Chem Technol, Gwangju 500757, South Korea

[2] Chonnam Natl Univ, Res Inst Catalysis, Gwangju 500757, South Korea

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2003年 / 57卷 / 02期

关键词：

heteropoly acid; mesoporous material; dispersion measurement; adsorption-desorption; 1-butene;

D O I：

10.1016/S1387-1811(02)00547-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Heteropoly acid (HPA) catalysts supported on KIT-1 mesoporous material were prepared with different loadings and characterized using XRD, UV-VIS and N-2 adsorption. Supported HPA was dispersed mainly on the inner surface of pores, resulting in the disappearance of XRD peaks. The diffraction peaks of HPA from the KIT-I mesoporous material loaded with HPA of 41 wt% was very weak compared to those of physical mixtures of HPA and mesoporous material. The remaining adsorption amount of 1-butene on the supported HPA catalysts revealed the exposed amount of HPA molecules, which is useful in determining the HPA dispersion. HPA dispersion of supported HPA catalysts was useful to interpret their catalytic activity in the skeletal isomerization of 1-butene. (C) 2002 Elsevier Science Inc. All rights reserved.

引用

页码：113 / 120

页数：8

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