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High activity in CO oxidation of Ag nanoparticles supported on fumed silica

Paper ID Volume ID Publish Year Pages File Format Full-Text
51377 46841 2012 5 PDF Available
Title
High activity in CO oxidation of Ag nanoparticles supported on fumed silica
Abstract

Thermal decomposition of Ag nitrate on fumed silica resulted in catalysts which showed higher efficiency in CO oxidation as compared to the Ag catalysts described in the literature. The catalysts were active at sub-ambient temperatures, ensured complete conversion of CO at temperatures near ambient (specific activities > 50 h− 1 per total mass of Ag, 30 °C) and remained selective in H2-containing mixtures. Water vapors in ppm quantities in the feed gave positive effect on catalytic activity. The catalysts were stable during testing for several hours and could be reactivated after long-term testing with a full retention of activity.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Conventional method of catalyst synthesis but excellent catalytic properties. ► Remarkable activity in low-temperature CO oxidation. ► Unexpected effect of water on catalytic performance.

Keywords
Ag catalysts; Silica support; Fumed silica; CO oxidation; Catalytic activity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 22, 10 May 2012, Pages 43–47
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
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