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Low-temperature selective catalytic reduction of NOx with NH3 over hierarchically macro-mesoporous Mn/TiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
49779 46766 2013 4 PDF Available
Title
Low-temperature selective catalytic reduction of NOx with NH3 over hierarchically macro-mesoporous Mn/TiO2
Abstract

•The hierarchically macro-mesoporous Mn/TiO2 catalyst was prepared.•The catalyst showed excellent low-temperature deNOx activity and SO2-resistance.•The catalyst provided large specific surface area.•Manganese oxides were highly dispersed on hierarchically porous titania support.•Coordinated NH3 and bridging nitrate were the key intermediates in the reaction.

The hierarchically macro-mesoporous Mn/TiO2 catalyst (HM-Mn/TiO2) using Pluronic F127 as pore agent was synthesized by sol–gel method and used for low-temperature selective catalytic reduction of NOx with NH3. Compared with Mn/TiO2, HM-Mn/TiO2 showed higher low-temperature activity and better SO2-resistance. The characterization results indicated that the introduction of pore agent (Pluronic F127) could improve the dispersion of manganese oxides and thus increase the catalyst surface area. The in situ DRIFTS results revealed that more coordinated NH3 and bridging nitrate, which were the key reactants in reaction, could be adsorbed on HM-Mn/TiO2 than those on Mn/TiO2.

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Keywords
Low-temperature SCR; Hierarchically macro-mesoporous catalyst; Manganese; NO removal; SO2-resistance
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Low-temperature selective catalytic reduction of NOx with NH3 over hierarchically macro-mesoporous Mn/TiO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 42, 5 December 2013, Pages 10–13
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
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us