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Alumina-supported In2O3, Ga2O3 and B2O3 catalysts for lean NOx reduction with dimethyl ether

Paper ID Volume ID Publish Year Pages File Format Full-Text
46390 46438 2012 15 PDF Available
Title
Alumina-supported In2O3, Ga2O3 and B2O3 catalysts for lean NOx reduction with dimethyl ether
Abstract

Alumina-supported In2O3, Ga2O3 and B2O3 were investigated as catalysts for lean NOx reduction with DME as reducing agent and compared to pure Al2O3 and In2O3. The In2O3-promoted alumina catalysts showed the highest NOx conversion at low temperatures, although with a narrow temperature window. Pure In2O3, on the other hand, was inactive for NOx reduction with DME. The Ga2O3- and B2O3-promoted alumina catalysts gave the highest NOx conversion at higher temperatures, showed a temperature window similar to pure alumina, but were less sensitive to H2O inhibition. Possible reasons for these observations are discussed.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► γ-Alumina-based catalysts were studied for lean NOx reduction with dimethyl ether. ► In2O3/Al2O3, Ga2O3/Al2O3 and B2O3/Al2O3 gave higher NOx conversion than pure Al2O3. ► In2O3/Al2O3 catalysts showed the highest NOx conversion at low temperature. ► Pure In2O3 was inactive for NOx reduction with dimethyl ether. ► Ga2O3/Al2O3 and B2O3/Al2O3 gave the highest NOx conversion at high temperature.

Keywords
Hydrocarbon-SCR; NOx reduction; Alumina; Alternative fuel; Dimethyl ether; Indium; Gallium; Boron
First Page Preview
Alumina-supported In2O3, Ga2O3 and B2O3 catalysts for lean NOx reduction with dimethyl ether
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 117–118, 18 May 2012, Pages 369–383
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis