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Catalytic reduction of NO by CO over copper-oxide supported mesoporous silica

Paper ID Volume ID Publish Year Pages File Format Full-Text
41057 45876 2011 11 PDF Available
Title
Catalytic reduction of NO by CO over copper-oxide supported mesoporous silica
Abstract

Copper oxide supported on four different types of mesoporous silica (SBA-15, MCM-41, MCM-48 and KIT-6) were prepared and examined for catalytic reduction of NO with CO in the temperature range of 250–500 °C. Their structural and chemical properties were characterized by N2 adsorption, low angle and wide angle X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), FTIR and temperature programmed reduction (TPR). H2-TPR revealed that MCM-41 and SBA-15 tend to possess a higher quantity of reducible copper species in contrast to MCM-48 and KIT-6. CuO supported on MCM-41 and SBA-15 exhibited higher activity in catalytic reduction of NO than CuO supported on MCM-48 and KIT-6. The superior catalytic activity was attributed to homogeneous dispersion of CuO and availability of the reducible copper ions in the channels of mesoporous materials.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (115 K)Download as PowerPoint slideHighlights► Structure directed CuO catalyst loading on mesoporous silica based support. ► Silica support with 3D pore structure type facilitates higher reactant adsorption. ► Higher catalyst–support interactions within 2D pore structure favor CuO activity.

Keywords
Nitric oxide; Catalytic reduction; Mesoporous silica; Copper oxide
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Catalytic reduction of NO by CO over copper-oxide supported mesoporous silica
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 409–410, 15 December 2011, Pages 55–65
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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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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