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Promotive effect of Nb2O5 on the catalytic activity of Ir/SiO2 for NO reduction with CO under oxygen-rich conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
52747 46885 2007 4 PDF Available
Title
Promotive effect of Nb2O5 on the catalytic activity of Ir/SiO2 for NO reduction with CO under oxygen-rich conditions
Abstract

The addition of Nb2O5 was found to promote considerably the catalytic activity of Ir/SiO2 for the selective reduction of NO with CO under excess O2- and SO2-free conditions. Improvement of durability against oxidation of Ir metal by Nb2O5 addition is the main reason for the activity enhancement. Adding Nb2O5 to Ir/SiO2 (Nb2O5/Ir/SiO2) was more effective than using Nb2O5/SiO2 support for Ir (Ir/Nb2O5/SiO2). The excellent activity of Nb2O5/Ir/SiO2 can be attributed to the strong interaction of Ir with Nb2O5 as well as high Ir dispersion.

Keywords
Selective reduction; Nitrogen monoxide; Carbon monoxide; Sulfur dioxide; Iridium catalyst; Niobium oxide; Silica
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Promotive effect of Nb2O5 on the catalytic activity of Ir/SiO2 for NO reduction with CO under oxygen-rich conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 6, June 2007, Pages 885–888
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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