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Effect of rhodium on the properties of bifunctional MxOy/ZrO2 catalysts in the reduction of nitrogen oxides by hydrocarbons

Paper ID Volume ID Publish Year Pages File Format Full-Text
48782 46522 2007 7 PDF Available
Title
Effect of rhodium on the properties of bifunctional MxOy/ZrO2 catalysts in the reduction of nitrogen oxides by hydrocarbons
Abstract

The catalytic properties of transition metal oxides (Cr, Ce, and Co) supported on ZrO2 synthesized by various methods, as well as the effect of rhodium on the performance of the MxOy/ZrO2 oxide systems in NO reduction with hydrocarbons (methane, propane–butane mixture, and propene) were studied. Scanning electron microscopy, ammonia thermoprogrammed desorption (NH3-TPD), XPS, and IR spectroscopy were used to study the physicochemical indices of rhodium-promoted MxOy/ZrO2 oxide catalysts. The enhancement of the redox properties of the oxide catalysts upon the introduction of rhodium does not alter their bifunctional nature in SCR activity: these catalysts have both redox and strong acid Brønsted-sites.

Keywords
Nitrogen oxides; Reduction; Hydrocarbons; Zirconia; Transition metal oxides; Rhodium; Acidity; Bifunctionality
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Effect of rhodium on the properties of bifunctional MxOy/ZrO2 catalysts in the reduction of nitrogen oxides by hydrocarbons
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 70, Issues 1–4, 31 January 2007, Pages 58–64
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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