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Influence of sulphate doping on Pd/zirconia based catalysts for the selective catalytic reduction of nitrogen oxides with methane

Paper ID Volume ID Publish Year Pages File Format Full-Text
48988 46536 2007 8 PDF Available
Title
Influence of sulphate doping on Pd/zirconia based catalysts for the selective catalytic reduction of nitrogen oxides with methane
Abstract

The effect of sulphating zirconia on the selective catalytic reduction of NO by CH4 in oxygen excess of Pd catalysts has been investigated. Since both the acidity and the Pd dispersion both contribute to the activity and selectivity of these catalysts a series of samples were prepared with different sulphate contents but maintaining the amount of Pd constant. Significant chemical and textural changes were caused by sulphating the zirconium hydroxide starting material, which lead to a clear improvement in the catalytic behaviour. A medium sulphate doping (≈4 wt.% expressed as SO42−) was found to be the most adequate to promote activity and selectivity in these Pd-sulphate zirconia based catalysts.

Keywords
Sulphate; Zirconia; Catalysts; Palladium; DeNOx; SCR; NOx; CH4
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Influence of sulphate doping on Pd/zirconia based catalysts for the selective catalytic reduction of nitrogen oxides with methane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 71, Issues 3–4, 15 February 2007, Pages 254–261
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
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