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Topics in Catalysis
Published in: Topics in Catalysis 3-5/2017

06-05-2016 | Original Paper

Effect of Molybdenum on the Behavior of Sulfated and Non-sulfated Titanium Pillared Clay in the Selective Catalytic Reduction of NO by Ammonia

Authors: Randa Rejeb, Lilia Khalfallah Boudali, Gérard Delahay, Carolina Petitto

Published in: Topics in Catalysis | Issue 3-5/2017

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Abstract

New mixed sulfated and non-sulfated molybdenum titanium pillared clay, from two starting clays, were prepared with various molybdenum amounts and different sulfate concentrations. The mixed pillared clays were characterized by chemical analysis, X-ray Diffraction, N2-physisorption and NH3-temperature programmed desorption. Subsequently, they were tested as catalysts for the selective catalytic reduction of nitrogen oxide (SCR-NO) by ammonia. The samples are microporous and their properties are dependent of the molybdenum and sulfate contents. Bronsted and Lewis acid sites exist on the catalyst surface and their number depends on the molybdenum amount retained by the clay as well as the sulfate concentration. Catalytic results in the SCR-NO by ammonia are discussed in terms of the physicochemical properties of the solids. At higher temperatures, the best molybdenum-titanium-pillared clay showed superior catalytic performance than a commercial catalyst. The best catalyst exhibited a favorable SCR performance above 400 °C and had a large operating temperature window (400–550 °C).
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Metadata
Title
Effect of Molybdenum on the Behavior of Sulfated and Non-sulfated Titanium Pillared Clay in the Selective Catalytic Reduction of NO by Ammonia
Authors
Randa Rejeb
Lilia Khalfallah Boudali
Gérard Delahay
Carolina Petitto
Publication date
06-05-2016
Publisher
Springer US
Published in
Topics in Catalysis / Issue 3-5/2017
Print ISSN: 1022-5528
Electronic ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-016-0603-1

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