Generation of H2O2 from H2 and O2 over zeolite beta containing Pd and heterogenized organic compounds

被引：37

作者：

Park, SE ^{[1
]}

Huang, L ^{[1
]}

Lee, CW ^{[1
]}

Chang, JS ^{[1
]}

机构：

[1] Korea Res Inst Chem Technol, Ind Catalysis Res Lab, Taejon 305600, South Korea

来源：

CATALYSIS TODAY | 2000年 / 61卷 / 1-4期

关键词：

H2O2; zeolite beta; Pd; hydroquinone-adsorbed Pd-zeolite; UV-Vis DRS;

D O I：

10.1016/S0920-5861(00)00351-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The catalytic generation of H2O2 from H-2 and O-2 has been studied over zeolite beta-supported Pd and zeolite beta-adsorbed organic compounds such as 1,4-benzoquinone (BQ), hydroquinone (HQ), azobenzene (AB) and hydrazobenzene (HAB). According to catalytic results, zeolite beta-supported Pd catalysts display effective performance relative to those prepared from other types of zeolites reported and Pd-loaded zeolite beta-adsorbed HQ catalysts show enhanced activity compared to zeolite beta-supported Pd catalysts. In situ UV-Vis spectroscopic study indicates that HQ can readily be converted to BQ reversibly under H-2 and air inside zeolite beta only in the presence of Pd. The results suggest that HQ acts as a strong hydrogen transfer agent to promote the production of H2O2 from H-2 and O-2 in cooperation with a Pd catalyst. By contrast, adsorption of BQ, AB and HAB induces suppression of the catalytic properties of Pd/zeolite beta. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：117 / 122

页数：6

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