Electrochemical oxidation of carbon monoxide: From platinum single crystals to low temperature fuel cells catalysts, Part I: Carbon monoxide oxidation onto low index platinum single crystals
Elektrohemijska oksidacija ugljen-monoksida - od monokristala platine do katalizatora za niskotemperaturne gorivne galvanske spregove, I deo - oksidacija ugljen-monoksida na niskoindeksnim monokristalima platine
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The electrochemical oxidation of carbon monoxide and the interfacial structure of the CO adlayer (COads) on platinum low index single crystals, Pt(111), Pt(100) and two reconstruction of Pt(110), were examined using the rotation disk electrode method in combination with the in situ surface X-ray diffraction scattering technique. The mechanism of CO oxidation is discussed on the basis of the findings that, depending on the potential, two energetic states of COads exist on the platinum surfaces. Thus, at lower potentials, weakly bonded states (COads,w) and at higher potentials strongly bonded states (COads,s) are formed. The mechanism of the oxidation of hydrogen-carbon monoxide mixtures is also proposed.
Korišćenjem tehnike rotirajuće disk elektrode i in-situ tehnike površinske difrakcije X-zraka, ispitivana je reakcija elektrohemijske oksidacije ugljen-monoksida i priroda adsorbovanog CO na monokristalima platine niskih indeksa orijentacije, Pt(111), Pt(100) i dve rekonstrukcije Pt(110). Diskutovan je mehanizam oksidacije CO na osnovu ustanovljenog postojanja dva energetska stanja adsorbovanog ugljen-monoksida, slabo vezanog stanja pri nižim potencijalima i čvrsto vezanog stanja pri višim potencijalima. Takođe je diskutovan mehanizam oksidacije smeša vodonika sa ugljen-monoksidom.
Кључне речи:
platinum single crystals / carbon monoxide / electrooxidation / hydrogen / mechanismИзвор:
Journal of the Serbian Chemical Society, 2001, 66, 11-12, 785-797Издавач:
- Serbian Chemical Society, Belgrade
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Grgur, Branimir AU - Marković, Nenad M. AU - Lucas, CA AU - Ross, Philip N.Jr. PY - 2001 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/356 AB - The electrochemical oxidation of carbon monoxide and the interfacial structure of the CO adlayer (COads) on platinum low index single crystals, Pt(111), Pt(100) and two reconstruction of Pt(110), were examined using the rotation disk electrode method in combination with the in situ surface X-ray diffraction scattering technique. The mechanism of CO oxidation is discussed on the basis of the findings that, depending on the potential, two energetic states of COads exist on the platinum surfaces. Thus, at lower potentials, weakly bonded states (COads,w) and at higher potentials strongly bonded states (COads,s) are formed. The mechanism of the oxidation of hydrogen-carbon monoxide mixtures is also proposed. AB - Korišćenjem tehnike rotirajuće disk elektrode i in-situ tehnike površinske difrakcije X-zraka, ispitivana je reakcija elektrohemijske oksidacije ugljen-monoksida i priroda adsorbovanog CO na monokristalima platine niskih indeksa orijentacije, Pt(111), Pt(100) i dve rekonstrukcije Pt(110). Diskutovan je mehanizam oksidacije CO na osnovu ustanovljenog postojanja dva energetska stanja adsorbovanog ugljen-monoksida, slabo vezanog stanja pri nižim potencijalima i čvrsto vezanog stanja pri višim potencijalima. Takođe je diskutovan mehanizam oksidacije smeša vodonika sa ugljen-monoksidom. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Electrochemical oxidation of carbon monoxide: From platinum single crystals to low temperature fuel cells catalysts, Part I: Carbon monoxide oxidation onto low index platinum single crystals T1 - Elektrohemijska oksidacija ugljen-monoksida - od monokristala platine do katalizatora za niskotemperaturne gorivne galvanske spregove, I deo - oksidacija ugljen-monoksida na niskoindeksnim monokristalima platine EP - 797 IS - 11-12 SP - 785 VL - 66 UR - https://hdl.handle.net/21.15107/rcub_technorep_356 ER -
@article{ author = "Grgur, Branimir and Marković, Nenad M. and Lucas, CA and Ross, Philip N.Jr.", year = "2001", abstract = "The electrochemical oxidation of carbon monoxide and the interfacial structure of the CO adlayer (COads) on platinum low index single crystals, Pt(111), Pt(100) and two reconstruction of Pt(110), were examined using the rotation disk electrode method in combination with the in situ surface X-ray diffraction scattering technique. The mechanism of CO oxidation is discussed on the basis of the findings that, depending on the potential, two energetic states of COads exist on the platinum surfaces. Thus, at lower potentials, weakly bonded states (COads,w) and at higher potentials strongly bonded states (COads,s) are formed. The mechanism of the oxidation of hydrogen-carbon monoxide mixtures is also proposed., Korišćenjem tehnike rotirajuće disk elektrode i in-situ tehnike površinske difrakcije X-zraka, ispitivana je reakcija elektrohemijske oksidacije ugljen-monoksida i priroda adsorbovanog CO na monokristalima platine niskih indeksa orijentacije, Pt(111), Pt(100) i dve rekonstrukcije Pt(110). Diskutovan je mehanizam oksidacije CO na osnovu ustanovljenog postojanja dva energetska stanja adsorbovanog ugljen-monoksida, slabo vezanog stanja pri nižim potencijalima i čvrsto vezanog stanja pri višim potencijalima. Takođe je diskutovan mehanizam oksidacije smeša vodonika sa ugljen-monoksidom.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Electrochemical oxidation of carbon monoxide: From platinum single crystals to low temperature fuel cells catalysts, Part I: Carbon monoxide oxidation onto low index platinum single crystals, Elektrohemijska oksidacija ugljen-monoksida - od monokristala platine do katalizatora za niskotemperaturne gorivne galvanske spregove, I deo - oksidacija ugljen-monoksida na niskoindeksnim monokristalima platine", pages = "797-785", number = "11-12", volume = "66", url = "https://hdl.handle.net/21.15107/rcub_technorep_356" }
Grgur, B., Marković, N. M., Lucas, C.,& Ross, P. N.Jr.. (2001). Electrochemical oxidation of carbon monoxide: From platinum single crystals to low temperature fuel cells catalysts, Part I: Carbon monoxide oxidation onto low index platinum single crystals. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 66(11-12), 785-797. https://hdl.handle.net/21.15107/rcub_technorep_356
Grgur B, Marković NM, Lucas C, Ross PN. Electrochemical oxidation of carbon monoxide: From platinum single crystals to low temperature fuel cells catalysts, Part I: Carbon monoxide oxidation onto low index platinum single crystals. in Journal of the Serbian Chemical Society. 2001;66(11-12):785-797. https://hdl.handle.net/21.15107/rcub_technorep_356 .
Grgur, Branimir, Marković, Nenad M., Lucas, CA, Ross, Philip N.Jr., "Electrochemical oxidation of carbon monoxide: From platinum single crystals to low temperature fuel cells catalysts, Part I: Carbon monoxide oxidation onto low index platinum single crystals" in Journal of the Serbian Chemical Society, 66, no. 11-12 (2001):785-797, https://hdl.handle.net/21.15107/rcub_technorep_356 .