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Copper ion-exchanged and impregnated Fe-pillared clays: Study of the influence of the synthesis conditions on the activity for the selective catalytic reduction of NO with C3H6

Paper ID Volume ID Publish Year Pages File Format Full-Text
44441 46029 2006 8 PDF Available
Title
Copper ion-exchanged and impregnated Fe-pillared clays: Study of the influence of the synthesis conditions on the activity for the selective catalytic reduction of NO with C3H6
Abstract

Copper ion-exchanged and impregnated iron-pillared interlayer clays (Fe-PILCs), prepared by using copper solutions with different pH values and copper precursors, were tested in the selective catalytic reduction (SCR) of NOx by propene. Low pH values led to dehydroxylation of the iron pillars and damages in the clay structure. Samples prepared without pH control presented isolated Cu2+ ions; those prepared by using alkaline pH solutions presented Cu2+ ions and CuO clusters. It was observed that the presence of Cu2+ ions accompanied by CuO clusters led to an improvement in the NOx yield to N2, which was in agreement with the best activity for C3H6 combustion showed by these catalysts. The best catalytic results were obtained with samples prepared by ion exchange with copper II acetate under alkaline pH, where Cu2+ ions and CuO clusters were simultaneously formed in an adequate proportion.

Keywords
Cu; NO-SCR; Iron-pillared clays; Impregnation; Ion exchange
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Copper ion-exchanged and impregnated Fe-pillared clays: Study of the influence of the synthesis conditions on the activity for the selective catalytic reduction of NO with C3H6
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 305, Issue 2, 24 May 2006, Pages 189–196
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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