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Effects of mercury oxidation on V2O5–WO3/TiO2 catalyst properties in NH3-SCR process

Paper ID Volume ID Publish Year Pages File Format Full-Text
49521 46751 2015 5 PDF Available
Title
Effects of mercury oxidation on V2O5–WO3/TiO2 catalyst properties in NH3-SCR process
Abstract

•Mercury oxidized over V2O5–WO3/TiO2 to prepare mercury exposed catalyst.•NO conversion of mercury exposed catalyst decreases compared with the fresh one.•XPS confirmed the transformation of V5 + species into V4 + species.•Lattice oxygen on the surface of catalyst was consumed after mercury oxidation.•Results indicated the competitive reaction on the catalyst surface.

The effects of mercury oxidation on V2O5–WO3/TiO2 SCR catalyst's physical and chemical properties have been investigated. Both fresh catalyst and mercury exposed catalyst have been examined by BET, XRD, XPS and catalytic activity measurements. Mercury oxidation promoted the V5 + species transforming to the V4 + species and consumed the lattice oxygen on the surface of catalyst. In addition, the NO conversion of mercury exposed catalyst decreased in the range of 200 °C to 300 °C. It suggested a competitive relationship between gaseous NH3 and adsorbed mercury on the catalyst surface in that temperature range.

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Keywords
WAGVTLWOSHQCSF-UHFFFAOYSA-NMercury oxidation; NH3-SCR; V2O5–WO3/TiO2 catalyst; Physical and chemical properties
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Effects of mercury oxidation on V2O5–WO3/TiO2 catalyst properties in NH3-SCR process
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 59, 10 January 2015, Pages 78–82
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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