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Carbon nano-fiber based membrane reactor for selective nitrite hydrogenation

Paper ID Volume ID Publish Year Pages File Format Full-Text
53222 46955 2016 12 PDF Available
Title
Carbon nano-fiber based membrane reactor for selective nitrite hydrogenation
Abstract

•Fabrication of a membrane reactor for the nitrite hydrogenation.•Reactor layout allows low hydrogen concentrations in the reaction zone.•Manipulation of the H/N ratio on the catalyst surface.•Higher selectivity towards nitrogen than other reactor layouts.

Catalytic hydrogenation of nitrite in drinking water demands control over the selectivity towards nitrogen, minimizing the formation of ammonia. This selectivity is strongly influenced by the H/N ratio of reaction intermediates at the catalyst surface. Therefore, we fabricated a membrane reactor that feeds separately hydrogen gas and a nitrite solution. This allows dosing low but homogeneous hydrogen concentrations along the axial direction of the catalyst bed. As a consequence, low H/N ratios can be achieved, favouring the formation of nitrogen without limiting the nitrite conversion. We demonstrate that this reactor concept offers better nitrogen selectivity than conventional reactor configurations where hydrogen is pre-dissolved in the nitrite solution.

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Keywords
Nitrite hydrogenation; Membrane reactor; Ammonia selectivity; H/N ratio; Carbon nano-fibers; Pd
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 273, 15 September 2016, Pages 50–61
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
Online Support
Any Questions? feel free to contact us