Effect of titania surface species on the chemisorption of CO and H2 on polycrystalline nickel

G. B. Raupp; J. A. Dumesic

doi:10.1021/j150648a007

Effect of titania surface species on the chemisorption of CO and H₂ on polycrystalline nickel

G. B. Raupp, J. A. Dumesic

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

A submonolayer amount of titanium was deposited and subsequently oxidized in situ on a clean polycrystalline nickel foil in ultrahigh vacuum. Temperature-programmed desorption revealed the activation energy for CO desorption was reduced significantly by the presence of titania surface species. The titania-containing Ni surface showed three binding states for dissociative hydrogen adsorption. Adsorption into the strongest of these three states was an activated process. These results suggest the apparent suppression of CO and H₂ adsorption typically observed at 300 K for titania-supported group 8 metals may be due to the existence of titania species on the surfaces of the metal particles.

Original language	English (US)
Pages (from-to)	660-663
Number of pages	4
Journal	Journal of physical chemistry
Volume	88
Issue number	4
DOIs	https://doi.org/10.1021/j150648a007
State	Published - 1984
Externally published	Yes

ASJC Scopus subject areas

General Engineering
Physical and Theoretical Chemistry

Access to Document

10.1021/j150648a007

Cite this

@article{0d919c29539140818e698d190dc22b62,

title = "Effect of titania surface species on the chemisorption of CO and H2 on polycrystalline nickel",

abstract = "A submonolayer amount of titanium was deposited and subsequently oxidized in situ on a clean polycrystalline nickel foil in ultrahigh vacuum. Temperature-programmed desorption revealed the activation energy for CO desorption was reduced significantly by the presence of titania surface species. The titania-containing Ni surface showed three binding states for dissociative hydrogen adsorption. Adsorption into the strongest of these three states was an activated process. These results suggest the apparent suppression of CO and H2 adsorption typically observed at 300 K for titania-supported group 8 metals may be due to the existence of titania species on the surfaces of the metal particles.",

author = "Raupp, {G. B.} and Dumesic, {J. A.}",

year = "1984",

doi = "10.1021/j150648a007",

language = "English (US)",

volume = "88",

pages = "660--663",

journal = "Journal of physical chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "4",

}

TY - JOUR

T1 - Effect of titania surface species on the chemisorption of CO and H2 on polycrystalline nickel

AU - Raupp, G. B.

AU - Dumesic, J. A.

PY - 1984

Y1 - 1984

N2 - A submonolayer amount of titanium was deposited and subsequently oxidized in situ on a clean polycrystalline nickel foil in ultrahigh vacuum. Temperature-programmed desorption revealed the activation energy for CO desorption was reduced significantly by the presence of titania surface species. The titania-containing Ni surface showed three binding states for dissociative hydrogen adsorption. Adsorption into the strongest of these three states was an activated process. These results suggest the apparent suppression of CO and H2 adsorption typically observed at 300 K for titania-supported group 8 metals may be due to the existence of titania species on the surfaces of the metal particles.

AB - A submonolayer amount of titanium was deposited and subsequently oxidized in situ on a clean polycrystalline nickel foil in ultrahigh vacuum. Temperature-programmed desorption revealed the activation energy for CO desorption was reduced significantly by the presence of titania surface species. The titania-containing Ni surface showed three binding states for dissociative hydrogen adsorption. Adsorption into the strongest of these three states was an activated process. These results suggest the apparent suppression of CO and H2 adsorption typically observed at 300 K for titania-supported group 8 metals may be due to the existence of titania species on the surfaces of the metal particles.

UR - http://www.scopus.com/inward/record.url?scp=0343211948&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0343211948&partnerID=8YFLogxK

U2 - 10.1021/j150648a007

DO - 10.1021/j150648a007

M3 - Article

AN - SCOPUS:0343211948

SN - 0022-3654

VL - 88

SP - 660

EP - 663

JO - Journal of physical chemistry

JF - Journal of physical chemistry

IS - 4

ER -

Effect of titania surface species on the chemisorption of CO and H₂ on polycrystalline nickel

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this