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Electrochemical activation of a non noble metal catalyst for the water–gas shift reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
50738 46812 2011 4 PDF Available
Title
Electrochemical activation of a non noble metal catalyst for the water–gas shift reaction
Abstract

A novel electrochemical catalyst (Ni/K-βAl2O3/Au) has been prepared, characterized and tested under electrochemical promotion conditions for the water gas shift reaction. At 350 °C, under CO/H2O: 1%/3% composition, negative potential applications in the single chamber cell, i.e., K+ supplied ions to the active Ni catalyst film, caused a strong increase in the catalytic reaction rate for H2 production (maximum rate enhancement ratio ρ = 2.7 at optimal potential conditions). The promotional phenomenon was found to be reversible due to the activation of H2O molecules chemisorption vs. CO with the consequent formation of active OH species. The achieved results show potential for the practical application of the phenomenon of electrochemical promotion of catalysis in the activation of base metal catalysts for this kind of processes.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights►A novel single chamber solid electrolyte based on Ni has been developed. ►It has been electrochemically promoted for the water–gas shift reaction. ►A strong promotional effect was found at negative potentials (water activation vs. CO). ►The NEMCA effect can be used to greatly activate no noble metal catalyst.

Keywords
Electrochemical promotion; NEMCA effect; Electrocatalysis; Electrochemical catalyst; Ni catalyst; Water gas shift
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Electrochemical activation of a non noble metal catalyst for the water–gas shift reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 15, Issue 1, 15 November 2011, Pages 6–9
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