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Simulation of SCR equipped vehicles using iron-zeolite catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
42752 45940 2009 9 PDF Available
Title
Simulation of SCR equipped vehicles using iron-zeolite catalysts
Abstract

Iron-catalysts, based on ZSM-5 (FeZSM5) and Cuban natural Mordenite (FeMORD) zeolites have been prepared by a conventional ion-exchange method and their catalytic activity in the selective catalytic reduction (SCR) of NO with ammonia was studied in the presence of H2O and SO2. A commercial SCR catalyst (CATCO) based on V2O5–WO3–TiO2, was also studied as a reference. This paper presents the experimental results of using these catalysts without toxic vanadium and also exploits a neural network-based approach to predict NOx conversion efficiency of three SCR catalysts. The mathematical functions derived have been integrated into a numerical model to simulate diesel road vehicles equipped with SCR catalysts such as those studied here. The main results indicate that despite toxic vanadium and N2O formation, CATCO shows better NOx conversion efficiencies. However, FeMORD does not produce N2O and performs better than the FeZSM5. The simulation results on real cycles show lower level of NOx for heavy-duty and light-duty diesel vehicles compared with homologation load cycles.

Graphical abstractThree iron containing SCR catalysts were studied and a neural network-based approach to predict NOx conversion efficiency was proposed. The derived mathematical functions are integrated in a numerical model for diesel road vehicle simulation to simulate diesel vehicles equipped with such SCR catalysts. The simulation results on real cycles show lower levels of NOx for heavy-duty and light-duty diesel vehicles, compared with homologation load cycles.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
SCR; NOx; Diesel road vehicle; Zeolites; Neural networks; Road vehicle simulator
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 366, Issue 1, 15 September 2009, Pages 13–21
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
Any Questions? feel free to contact us