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Support effect on selectivity of nitrite reduction in water

Paper ID Volume ID Publish Year Pages File Format Full-Text
47091 46458 2010 6 PDF Available
Title
Support effect on selectivity of nitrite reduction in water
Abstract

Palladium catalysts on various supports were studied for the hydrogenation of aqueous nitrite solution. The effects of reaction parameters such as nitrite and hydrogen concentration, pH and reaction temperature on the selectivity were discussed. Internal concentration gradients are influencing the selectivity significantly. Gradients of protons and nitrite are responsible for increasing ammonia selectivity. Carbon based catalysts were more selective towards ammonia as compared to oxidic supports. We propose that electron conductivity of carbon supports influences internal concentration gradients of both hydrogen and protons, favouring ammonia selectivity.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ Internal concentration gradients influence NH4+ selectivity during NO2− reduction. ▶ Carbon based supports are more selective towards NH4+ compared to oxidic supports. ▶ Electron conductivity of carbon supports influences the ammonia selectivity.

Keywords
Nitrite reduction; Carbon nanofibers
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 101, Issues 1–2, 22 November 2010, Pages 144–149
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
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us