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Preparation of Cu-ion-exchanged Fe-PILCs for the SCR of NO by propene

Paper ID Volume ID Publish Year Pages File Format Full-Text
49162 46561 2006 10 PDF Available
Title
Preparation of Cu-ion-exchanged Fe-PILCs for the SCR of NO by propene
Abstract

Cu-ion-exchanged iron-pillared interlayer clays (Fe-PILCs) were prepared under different pH conditions to analyze the influence on the distribution of the copper species over their structure, and on the catalytic performance for the selective catalytic reduction (SCR) of NOx by propene. It was observed that for those samples prepared without pH control, the copper was as isolated Cu2+ ions. When the samples were prepared under acid pH, the catalytic activity decreased and an appreciable CO production was observed, likely due to the low amount of Cu2+ cations in those catalysts. Finally, for the samples prepared under alkaline pH, the copper was as Cu2+ ions and CuO clusters. Their catalytic tests showed the best results for the SCR of NOx. The presence of CuO species led to an improvement in NOx yield to N2. With the catalytic tests and a study by in situ FTIR of SCR of NO, a reaction mechanism has been proposed, where the reaction intermediates are mainly acetates, organic nitro compounds and nitrous oxide species.

Keywords
Cu; NO-SCR; Iron-pillared clays; Infrared spectroscopy; TPD
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Preparation of Cu-ion-exchanged Fe-PILCs for the SCR of NO by propene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 65, Issues 3–4, 6 June 2006, Pages 175–184
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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