Total oxidation of volatile organic compounds with hydrophobic cryptomelane-type octahedral molecular sieves

被引：151

作者：

Luo, J

Zhang, QH

Huang, AM

Suib, SL

机构：

[1] Univ Connecticut, Dept Chem, Storrs, CT 06269 USA

[2] Univ Connecticut, Dept Chem Engn, Storrs, CT 06269 USA

[3] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2000年 / 35-6卷

关键词：

cryptomelane; hydrophobic; molecular sieves; octahedral molecular sieves (OMS); volatile organic compounds (VOCs);

D O I：

10.1016/S1387-1811(99)00221-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalytic oxidation of volatile organic compounds (VOCs) has been studied with cryptomelane-type manganese oxide octahedral molecular sieves (OMS-2) synthesized in buffer solutions. Characterization of OMS-2 has been done using X-Pay diffraction (XRD), infrared (IR), thermogravimetric analysis-differential scanning calorimetry (TGA-DSC), combined temperature programmed decomposition and mass spectrometry (TPD-MS), adsorption and adsorbate IR techniques. OMS-2 was found to possess excellent hydrophobicity and strong affinity for VOCs. Excellent activity and stability of OMS-2 in oxidation of VOCs at relatively low temperatures (100% conversion of 0.9% C6H6 in air or 2.5% ethanol in air at 20 000 h(-1) GHSV below 300 degrees C) are due to these hydrophobic properties and to facile evolution of lattice oxygen without destroying the structure (120-650 degrees C). (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：209 / 217

页数：9

共 19 条

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