Please use this identifier to cite or link to this item:
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/27439
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Naimah, Ibrahim | - |
dc.contributor.author | Poulidi, Danai | - |
dc.contributor.author | Metcalfe, Ian S. | - |
dc.date.accessioned | 2013-08-13T09:20:50Z | - |
dc.date.available | 2013-08-13T09:20:50Z | - |
dc.date.issued | 2013-07 | - |
dc.identifier.citation | Journal of Catalysis, vol. 303, 2013, pages 100-109 | en_US |
dc.identifier.issn | 0021-9517 | - |
dc.identifier.uri | http://www.sciencedirect.com/science/article/pii/S0021951713001000 | - |
dc.identifier.uri | http://dspace.unimap.edu.my/123456789/27439 | - |
dc.description | Link to publisher's homepage at http://www.elsevier.com/ | en_US |
dc.description.abstract | The role of sodium addition as foreign (impurity) species on the electrochemical promotion of ethylene oxidation in a Pt/YSZ system was investigated. It was found that the presence of sodium surface species on the catalyst surface can significantly affect its catalytic and electrocatalytic properties, but there is no clear evidence at this stage that such species are necessary for the observation of EPOC. Under negative polarisation, low coverage sodium was found to have a pronounced effect on the electrochemical promotion of ethylene oxidation as an electronic promoter. The reaction changed behaviour from electrophilic at low sodium coverage (0.11%) and low to intermediate oxygen partial pressure (pO2 ≤ 3.0 kPa) to electrophobic at high sodium coverage (65%) and under high oxygen partial pressures (pO2 = 8.0 kPa). In between the two sets of conditions, the reaction showed volcano-type behaviour depending on the coverage of sodium and gas-phase oxygen partial pressure. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Inc. | en_US |
dc.subject | EPOC | en_US |
dc.subject | Ethylene oxidation | en_US |
dc.subject | Platinum | en_US |
dc.subject | Sodium promotion | en_US |
dc.subject | Surface impurities | en_US |
dc.title | The role of sodium surface species on electrochemical promotion of catalysis in a Pt/YSZ system: The case of ethylene oxidation | en_US |
dc.type | Article | en_US |
Appears in Collections: | School of Environmental Engineering (Articles) Naimah Ibrahim, Assoc. Prof. Dr. |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
The role of sodium surface species on electrochemical promotion of catalysis in a Pt.pdf | 31.1 kB | Adobe PDF | View/Open |
Items in UniMAP Library Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.