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Influence of Ca doping on MnOx/TiO2 catalysts for low-temperature selective catalytic reduction of NOx by NH3

Paper ID Volume ID Publish Year Pages File Format Full-Text
50091 46779 2012 4 PDF Available
Title
Influence of Ca doping on MnOx/TiO2 catalysts for low-temperature selective catalytic reduction of NOx by NH3
Abstract

A series of Ca doped MnOx/TiO2 catalysts was synthesized in this paper by using wet-impregnation method. Thereafter, the influence of Ca on the performance of the MnOx/TiO2 catalysts for low-temperature selective catalytic reduction of NOx by NH3 was investigated. Experimental results showed that Ca doping could have negative effect on the activities of the MnOx/TiO2 catalysts. This could be due to the resultant less acid sites and lower NO oxidation ability. However, at a high Ca doping, this effect would become dilute, presumably due to the formation of CaTiO3 that weakened the deactivation.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The effect of Ca on MnOx/TiO2 for low-temperature SCR reaction was firstly studied. ► Low Ca doping would suppress the catalytic activity. ► When the Ca content was shifted to 10 wt.%, the activity would be somewhat recovered. ► The formation of CaTiO3 could weaken the deactivation of Ca doping.

Keywords
Ca; Selective catalytic reduction; NH3; NO; Manganese
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Influence of Ca doping on MnOx/TiO2 catalysts for low-temperature selective catalytic reduction of NOx by NH3
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 18, 10 February 2012, Pages 106–109
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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