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NO removal by activated carbon-supported copper catalysts prepared by impregnation, polyol, and microwave heated polyol processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
41726 45897 2011 7 PDF Available
Title
NO removal by activated carbon-supported copper catalysts prepared by impregnation, polyol, and microwave heated polyol processes
Abstract

The effect of HNO3 pretreatment of activated carbon (AC)-supported copper catalysts for NO removal with NH3 was studied. In addition, the effects of various preparation methods for Cu/AC catalysts, namely, impregnation (IM), polyol process (P), and microwave heated polyol process (MP), on the activity of NO removal with NH3 were compared. HNO3 pretreatment increased the number of carboxyl sites and promoted good dispersion of active sites. In addition, the chemical states of active phases were found to be affected when the catalysts were prepared by the microwave heated polyol process. More Cu2O particles were observed on the Cu/AC-N-MP catalyst than on the Cu/AC-N-P catalyst. The experimental results indicated that HNO3 pretreatment of the AC support led to increased catalytic activity for NO removal with NH3. The catalytic activity of the Cu/AC catalysts for NO removal at 200 °C decreased in the following order: Cu/AC-N-MP > Cu/AC-N-P > Cu/AC-N-IM. The microwave heated polyol process is a facile method for the rapid synthesis of carbon-supported Cu catalysts for NO removal at low temperature.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (145 K)Download as PowerPoint slideHighlights► Pretreatment of AC support with HNO3 increased the number of carboxyl sites. ► The active phases of Cu/AC prepared by the MP were Cu, CuO, and Cu2O. ► The MP is an easy and effective preparation method for Cu/AC catalyst for NO removal.

Keywords
NO removal; Microwave heated polyol process; Copper species; Catalyst
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NO removal by activated carbon-supported copper catalysts prepared by impregnation, polyol, and microwave heated polyol processes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 397, Issues 1–2, 30 April 2011, Pages 234–240
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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