STUDIES OF CARBON-MONOXIDE AND HYDROGEN ADSORPTION ON NICKEL AND COBALT FOILS AIMED AT GAINING A BETTER INSIGHT INTO THE MECHANISM OF HYDROCARBON FORMATION

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dc.contributor.authorCABRERA, AL
dc.contributor.authorGARRIDO, WH
dc.contributor.authorVOLKMANN, UG
dc.date.accessioned2025-01-23T19:21:30Z
dc.date.available2025-01-23T19:21:30Z
dc.date.issued1994
dc.description.abstractSystematic studies of adsorption of hydrogen and carbon monoxide on polycrystalline surfaces of nickel and cobalt have been carried out. The aim of these studies was to pin a better insight into the catalyzed formation of hydrocarbons from H-2-CO mixtures. We have studied the adsorption of these gases by means of thermal desorption spectroscopy (TDS) on nickel foils and powders. More recently, we have obtained desorption spectra of hydrogen adsorbed on cobalt foils and powders. In this work we described desorption spectra of carbon monoxide on cobalt foils. Carbon monoxide desorption from cobalt foils was studied in a similar way as prior work, using a mass spectrometric method in an ultra high vacuum system. Two carbon monoxide desorption peaks were observed. These two states correspond to molecular CO and presumably dissociated CO, as it is observed in the case of stepped surfaces of Ni and Co single crystals. An activation energy of around 4.0 kcal/mol is obtained for the molecular state while for the dissociated state the energy is coverage-dependent with a value between 8.0 and 15.0 kcal/mol. The carbon monoxide desorption peaks were fitted with near Gaussian curves which facilitates the analysis of the data to obtain activation energies for desorption. Kinetic parameters for carbon monoxide and hydrogen desorption from nickel and cobalt foils are provided and compared with already published data involving single crystals.
dc.fuente.origenWOS
dc.identifier.issn1011-372X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/98790
dc.identifier.wosidWOS:A1994NB61000013
dc.issue.numero1-2
dc.language.isoen
dc.pagina.final126
dc.pagina.inicio115
dc.revistaCatalysis letters
dc.rightsacceso restringido
dc.subjectCARBON MONOXIDE ADSORPTION
dc.subjectHYDROGEN ADSORPTION
dc.subjectON NICKEL AND COBALT
dc.subject.ods07 Affordable and clean energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleSTUDIES OF CARBON-MONOXIDE AND HYDROGEN ADSORPTION ON NICKEL AND COBALT FOILS AIMED AT GAINING A BETTER INSIGHT INTO THE MECHANISM OF HYDROCARBON FORMATION
dc.typeartículo
dc.volumen25
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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