NDLI: Applications of the Electrochemical Promotion of Catalysis in Methanol Conversion Processes

Content Provider	SpringerLink
Author	González Cobos, J. López Pedrajas, D. Ruiz López, E. Valverde, J. L. Lucas Consuegra, A.
Copyright Year	2015
Abstract	In this work, three possible applications of the phenomenon of electrochemical promotion of catalysis (EPOC) are demonstrated for methanol conversion processes: enhancement of the catalytic activity, modification of the catalytic selectivity and partial oxidation of the catalyst. For that purpose, a Ni catalyst film prepared via a physical vapour deposition technique was electrochemically promoted by K$^{+}$ in different methanol conversion reactions for hydrogen production. Under methanol decomposition and steam reforming conditions, application of certain negative overpotentials and subsequent back-spillover of K$^{+}$ promoter ions led to an increase in the Ni catalytic activity through electrophilic EPOC behaviour. On the other hand, under methanol partial oxidation conditions, the K$^{+}$ ions caused a decrease in the catalytic selectivity toward H$_{2}$ and CO while they favoured selectivity toward CO$_{2}$ and H$_{2}$CO. This effect was explained by an increase in the Ni oxidation state due to O$_{2}$ activation induced by K$^{+}$ ions, as shown by post-reaction X-ray diffraction analysis. All the potassium-induced effects were reversible between negative and positive polarizations. This shows the different possibilities of the EPOC phenomena on nickel catalysts in heterogeneous catalysis. Specifically, the in situ modification of catalytic activity and selectivity in methanol conversion reactions would be interesting for on-board hydrogen production processes, where the attenuation of catalyst deactivation and the control of metal oxidation state would also play a key role.
Starting Page	1290
Ending Page	1302
Page Count	13
File Format	PDF
ISSN	10225528
Journal	Topics in Catalysis
Volume Number	58
Issue Number	18-20
e-ISSN	15729028
Language	English
Publisher	Springer US
Publisher Date	2015-09-14
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Electrochemical promotion Electrocatalysis H$_{2}$ production Cathodic arc deposition Methanol conversion Non noble metal Catalysis Physical Chemistry Pharmacy Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Catalysis Chemistry

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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