Adsorption of CO on Mg-promoted Co(poly)

Jukka Vaari; T. Vaara; J. Lahtinen; Pekka Hautojärvi

doi:10.1016/0169-4332(94)90286-0

Adsorption of CO on Mg-promoted Co(poly)

Jukka Vaari, T. Vaara, J. Lahtinen, Pekka Hautojärvi

Aalto University

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

12 Sitaatiot (Scopus)

Abstrakti

The effect of Mg on CO adsorption on polycrystalline Co foil has been studied using XPS and TDS. Mg was found to increase the adsorption capacity of the surface, promote the dissociation, and affect the sticking coefficient. The Mg overlayer is partially oxidized due to CO dissociation. Heating of the system above room temperature results in further Mg-promoted dissociation of CO. With increasing Mg coverage, the TDS peak at 387 K corresponding to CO desorption from the clean surface is gradually replaced by a C + O recombination feature around 900 K. The recombination is triggered by the decomposition of the Mg suboxide, observed as Mg desorption simultaneously with CO desorption.

Alkuperäiskieli	Englanti
Sivut	289-297
Sivumäärä	9
Julkaisu	Applied Surface Science
Vuosikerta	81
Numero	3
DOI - pysyväislinkit	https://doi.org/10.1016/0169-4332(94)90286-0
Tila	Julkaistu - 1994
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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10.1016/0169-4332(94)90286-0

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title = "Adsorption of CO on Mg-promoted Co(poly)",

abstract = "The effect of Mg on CO adsorption on polycrystalline Co foil has been studied using XPS and TDS. Mg was found to increase the adsorption capacity of the surface, promote the dissociation, and affect the sticking coefficient. The Mg overlayer is partially oxidized due to CO dissociation. Heating of the system above room temperature results in further Mg-promoted dissociation of CO. With increasing Mg coverage, the TDS peak at 387 K corresponding to CO desorption from the clean surface is gradually replaced by a C + O recombination feature around 900 K. The recombination is triggered by the decomposition of the Mg suboxide, observed as Mg desorption simultaneously with CO desorption.",

author = "Jukka Vaari and T. Vaara and J. Lahtinen and Pekka Hautoj{\"a}rvi",

year = "1994",

doi = "10.1016/0169-4332(94)90286-0",

language = "English",

volume = "81",

pages = "289--297",

journal = "Applied Surface Science",

issn = "0169-4332",

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TY - JOUR

T1 - Adsorption of CO on Mg-promoted Co(poly)

AU - Vaari, Jukka

AU - Vaara, T.

AU - Lahtinen, J.

AU - Hautojärvi, Pekka

PY - 1994

Y1 - 1994

N2 - The effect of Mg on CO adsorption on polycrystalline Co foil has been studied using XPS and TDS. Mg was found to increase the adsorption capacity of the surface, promote the dissociation, and affect the sticking coefficient. The Mg overlayer is partially oxidized due to CO dissociation. Heating of the system above room temperature results in further Mg-promoted dissociation of CO. With increasing Mg coverage, the TDS peak at 387 K corresponding to CO desorption from the clean surface is gradually replaced by a C + O recombination feature around 900 K. The recombination is triggered by the decomposition of the Mg suboxide, observed as Mg desorption simultaneously with CO desorption.

AB - The effect of Mg on CO adsorption on polycrystalline Co foil has been studied using XPS and TDS. Mg was found to increase the adsorption capacity of the surface, promote the dissociation, and affect the sticking coefficient. The Mg overlayer is partially oxidized due to CO dissociation. Heating of the system above room temperature results in further Mg-promoted dissociation of CO. With increasing Mg coverage, the TDS peak at 387 K corresponding to CO desorption from the clean surface is gradually replaced by a C + O recombination feature around 900 K. The recombination is triggered by the decomposition of the Mg suboxide, observed as Mg desorption simultaneously with CO desorption.

UR - http://www.scopus.com/inward/record.url?scp=0028549166&partnerID=8YFLogxK

U2 - 10.1016/0169-4332(94)90286-0

DO - 10.1016/0169-4332(94)90286-0

M3 - Article

AN - SCOPUS:0028549166

SN - 0169-4332

VL - 81

SP - 289

EP - 297

JO - Applied Surface Science

JF - Applied Surface Science

IS - 3

ER -

Adsorption of CO on Mg-promoted Co(poly)

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