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Effects of hydrogen and oxygenated hydrocarbons on the activity and SO2-tolerance of Ag/Al2O3 for selective reduction of NO

Paper ID Volume ID Publish Year Pages File Format Full-Text
49049 46543 2007 5 PDF Available
Title
Effects of hydrogen and oxygenated hydrocarbons on the activity and SO2-tolerance of Ag/Al2O3 for selective reduction of NO
Abstract

De-NOx performance and SO2-tolerance of Ag/Al2O3 catalyst for selective catalytic reduction of NO by hydrocarbon (HC-SCR) and HC-SCR in the presence of H2 (H2-HC-SCR) were investigated using 10 types of reductant (Et2O, ETBE, EtOH, 1-propanol, 2-propanol, t-butanol, 1-propanal, ethyl acetate, acetone, C3H8). Among various reductant tested, Et2O was most effective for achieving high de-NOx activity for HC-SCR and H2-HC-SCR. For all the reductants, de-NOx activity at low temperature region was increased by H2 co-feeding. Degree of activity enhancement was higher for C3H8 than for oxygenates, which is consistent with our previous proposal that H2 enhances de-NOx activity by promoting the oxidative activation of alkane into partially oxidized hydrocarbon intermediates. Effects of reductants and H2 co-feeding on the SO2-tolerance were examined using Et2O, ETBE, and EtOH. The result showed that use of oxygenates as well as H2 co-feeding resulted in the higher SO2-tolerance.

Keywords
Nitrogen oxides; Silver alumina; Oxygenates; Sulfur oxide
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Effects of hydrogen and oxygenated hydrocarbons on the activity and SO2-tolerance of Ag/Al2O3 for selective reduction of NO
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 71, Issues 1–2, 8 February 2007, Pages 80–84
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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
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