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Selective catalytic reduction of NOx by NH3 over MoO3-promoted CeO2/TiO2 catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
50162 46783 2014 4 PDF Available
Title
Selective catalytic reduction of NOx by NH3 over MoO3-promoted CeO2/TiO2 catalyst
Abstract

•MoO3–CeO2/TiO2 is more active than CeO2/TiO2 for the NH3-SCR of NOx.•The added MoO3 inhibits the adsorption of H2O and SO2 and the formation of sulfate.•The adsorption and activation of NH3 was promoted due to the added MoO3.

The addition of MoO3 enhanced the activity of CeO2/TiO2 catalyst for the selective reduction of NOx with NH3. The MoO3-promoted CeO2/TiO2 exhibited higher activity than CeO2/TiO2 even in the co-presence of H2O and SO2. This is because the introduction of Mo to the Ce10Ti catalyst can inhibit the adsorption of H2O and SO2 as well as the formation of sulfate species on the catalyst surface, thus alleviating the poisoning effect of H2O and SO2.

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Keywords
NOx; NH3-SCR; CeO2/TiO2; MoO3
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Selective catalytic reduction of NOx by NH3 over MoO3-promoted CeO2/TiO2 catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 46, 10 February 2014, Pages 90–93
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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