Interaction of H2 and CO with carbided and nitrided Ni(100)

Кискинова, М.; Goodman, D. W.

doi:10.1016/0039-6028(81)90421-0

Cited by 49 publications

(7 citation statements)

References 11 publications

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“…Several surface science studies have been dedicated to the influence of coadsorbed atoms on CO adsorption and desorption. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Experimentally, usually only a qualitative analysis of this interaction is possible. For instance, several groups [17][18][19][20][21] have studied a system in which CO is coadsorbed with oxygen.…”

Section: Introductionmentioning

confidence: 99%

The influence of carbon on the adsorption of CO on a Rh(100) single crystal

Nieskens

Jansen

Bavel

et al. 2006

Phys. Chem. Chem. Phys.

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The influence of carbon on the adsorption of CO from a Rh(100) single crystal has been studied by a combination of experimental techniques: Temperature Programmed Desorption (TPD), Low Energy Electron Diffraction (LEED), and High Resolution Electron Energy Loss Spectroscopy (HREELS). These experimental techniques were combined with a computational approach using Density Functional Theory (DFT). Using this combination of techniques, we have shown that surface carbon greatly influences adsorbed CO and we have determined the exact magnitude of this interaction. Furthermore, we have demonstrated that carbon does not remain fully on the surface; at higher coverage it diffuses partially to subsurface positions. The presence of these subsurface species significantly influences the adsorbates on the surface.

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Section: Introductionmentioning

confidence: 99%

The influence of carbon on the adsorption of CO on a Rh(100) single crystal

Nieskens

Jansen

Bavel

et al. 2006

Phys. Chem. Chem. Phys.

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“…Several surface science studies have been dedicated to the influence of coadsorbed atoms on CO adsorption and desorption. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Herein, we compute the change in metal-CO bond strength and express it in a pairwise lateral interaction energy. Hence we assume that the adsorption energy of CO as modified by the coadsorbed atoms can be described by Equation (1):…”

Section: Introductionmentioning

confidence: 99%

The Influence of Promoters and Poisons on Carbon Monoxide Adsorption on Rh(100): A DFT Study

Nieskens¹,

Ferré²,

Niemantsverdriet³

2005

ChemPhysChem

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Density functional theory calculations were performed to determine the pairwise lateral interaction energies between carbon monoxide and coadsorbed elements from the first three rows of the periodic table on a Rh(100) surface. The atoms were placed in a c(2x2) arrangement of fourfold hollow sites and the carbon monoxide probe molecule in a p(2x2) arrangement, so that each CO molecule had four atoms as nearest neighbours. The alkali atoms show an attractive interaction with CO while the other atoms show a repulsive interaction. For second-row elements the maximum repulsion is at nitrogen and for third-row elements at sulphur. Attempts to correlate the interaction energies with properties of the system, such as electronegativity, distances, or change in work function, failed, which implies that each combination of adsorbates needs to be calculated separately.

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“…Chemisorption studies of H2 and CO on carbon, nitrogen, sulfur, phosphorus, and chlorine precovered Ni(100) surfaces also support this condusion (38,42,43). These studies demonstrate that the attenuAtion ofsticking coefficients and the capacity ofthe surface for adsorption are related to the relative electronegativity of the pread- additive.…”

Section: Reactions Over Chemiicaily Modified Surfacesmentioning

confidence: 66%

“…This well-behaved system provides an excellent model for poisoning of the catalytic activity of nickel by sulfur because the ordered LEED patterns provide an accurate calibration for AES measurements. Reaction rate (8, 42) and TPD studies (12,42,43) have been done for several reactions as a function of'sulfur coverage over this surface.…”

Section: Reactions Over Chemiicaily Modified Surfacesmentioning

confidence: 99%

Catalysis: New Perspectives from Surface Science

Goodman

Houston

1987

Science

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One-sixth of the value of all goods manufactured in the United States involves catalytic processes. However, in spite of this dramatic economic impact, little is known about this broad subject at the molecular level. In the last two decades a variety of techniques have been developed for studying at the atomic level the structure, composition, and chemical bonding at surfaces. These techniques have been used to study adsorption and reaction on metal single crystals in an ultrahigh vacuum environment or to analyze catalysts before and after reaction. An important new development has been the coupling of an apparatus for the measurement of reaction kinetics at elevated pressures with an ultrahigh vacuum system for surface analysis. This approach has demonstrated that metal single crystals can be used to successfully model many important catalytic reactions and has established a direct link between the results of ultrahigh vacuum surface measurements and the chemistry that occurs under typical catalytic-processing conditions.

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Interaction of H2 and CO with carbided and nitrided Ni(100)

Cited by 49 publications

References 11 publications

The influence of carbon on the adsorption of CO on a Rh(100) single crystal

The influence of carbon on the adsorption of CO on a Rh(100) single crystal

The Influence of Promoters and Poisons on Carbon Monoxide Adsorption on Rh(100): A DFT Study

Catalysis: New Perspectives from Surface Science

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