Synthesis and characterization of Mn3O4 and Mn2O3 nanocrystals on SBA-15:: Novel combustion catalysts at low reaction temperatures

被引：96

作者：

Han, Yi-Fan ^{[1
]}

Chen, Fengxi ^{[1
]}

Zhong, Zi-Yi ^{[1
]}

Ramesh, Kanaparthi ^{[1
]}

Widjaja, Effendi ^{[1
]}

Chen, Lu-Wei ^{[1
]}

机构：

[1] Inst Chem Engn & Sci, Singapore 627883, Singapore

来源：

CATALYSIS COMMUNICATIONS | 2006年 / 7卷 / 10期

关键词：

nanocrystalline manganese oxides; SBA-15; Mn3O4; Mn2O3; CO oxidation and TEM;

D O I：

10.1016/j.catcom.2006.08.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple method established in the present study has proven to be effective on the synthesis of Mn3O4 and Mn2O3 nanocrystals by using mesoporous silicas (SBA-15) as nanoreactor. These catalysts were characterized by XRD, TEM, N-2-physisorption and laser Raman spectroscopic techniques. The structures obtained by thermolysis of Mn(II and III) acetylacetonates on SBA-15 were confirmed by XRD and Raman analysis. TEM characterization in combination with N-2 physisorption studies reveal that nanoparticles partially occupying the pores of SBA-15. The nanocrystals of Mn3O4 and Mn2O3 On SBA-15 exhibited tremendous catalytic activities during the steady-state CO oxidation at low reaction temperatures (below 523 K). The catalytic activity of these catalysts was found to be higher compared with traditional MnOx impregnated on SBA-15 catalysts. For the sake of comparison, the commercial Mn2O3 and Mn3O4 were also tested for the CO oxidation. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：739 / 744

页数：6

共 44 条

[41] Synthesis of monodisperse nanocrystals of manganese oxides [J].