NOX reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst

被引：37

作者：

Seker, E

Yasyerli, N

Gulari, E ^{[1
]}

Lambert, C

Hammerle, RH

机构：

[1] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

[2] Ford Sci Res Labs, Dearborn, MI 48124 USA

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2002年 / 37卷 / 01期

基金：

美国国家科学基金会;

关键词：

selective NO reduction; platinum/alumina catalyst; sol-gel preparation; urea;

D O I：

10.1016/S0926-3373(01)00318-6

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：

prepared 2% Pt on alumina catalyst using a single step sol-gel process (designated as 2% Pt-SG) and tested its activity for NO,, reduction with aqueous urea solutions under oxidizing conditions. Our results show that similar to99% NO., conversion was obtained as low as 150 degreesC but above 350 degreesC, the conversion became negative because of the additional formation of NO and NO2 from the oxidation of nitrogen-containing compounds. We also found that NO, conversion activity of 2% Pt-SG is strongly dependent on water content rather than on area amount and the presence of 7% oxygen in the feed lowers the maximum NO, conversion temperature from 250 to 150degreesC. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：27 / 35

页数：9

共 21 条

[1] Supported Ag catalysts for the lean reduction of NO with C3H6 [J].