Nanoparticles of RhOx in the MCM-41:: A novel catalyst for NO-CO reaction in excess O2

被引：6

作者：

Mulukutla, RS ^{[1
]}

Shido, T

Asakura, K

Iwasawa, Y

机构：

[1] Kansas State Univ, Dept Chem, Manhattan, KS 66506 USA

[2] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan

[3] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 0600811, Japan

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 8-9期

关键词：

sol-gel; transmission electron microscopy (TEM); X-ray diffraction (XRD); mesostructure; catalysis;

D O I：

10.1016/S1359-6462(01)00865-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanoparticles of rhodium oxides of size <3 nm or 6-8 nm were synthesized in the mesoporous MCM-41 molecular sieve (Rh-MCM-41) via sol-gel method. The size of the RhOx particles was varied depending on the synthesis conditions. Rh-MCM-41 samples were characterized by XRD; TEM, Si-29 Solid State NMR; BET analysis; XPS and Rh K edge EXAFS. Rh-MCM-41 with <3 nm sized RhOx had exhibited novel promotional effect in the formation of N-2 and N2O in the NO-CO catalytic reaction where as the RhOx with size 6-8 nm showed a negative effect. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1695 / 1698

页数：4

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