An in situ photoemission study of the dehydrogenation reaction of methanol on Ni()

Neubauer, Ralf; Whelan, Caroline M.; Denecke, R.; Steinrück, Hans‐Peter

doi:10.1016/s0039-6028(02)01359-6

Cited by 26 publications

(25 citation statements)

References 24 publications

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“…For the Ni(111) sample BE 287.44 eV well corresponds to the value of methanol multilayer reported in Ref. [16], where dehydrogenation of methanol on Ni(100) studied by photoemission was published. On Pt/Ni(111) sample the peak is shifted by 0.1 eV to lower BE.…”

Section: Resultssupporting

confidence: 81%

Photoemission study of methanol decomposition on Pt/Ni(111) surface alloy

Veltruská

Cabala

Libra

et al. 2010

Surface & Interface Analysis

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a Platinum shows excellent catalytic activity in electrochemical oxidation of methanol. It is widely used in direct methanol fuel cells, but it is readily poisoned by CO-like intermediates generated in methanol activation process. To increase Pt CO tolerance, oxophilic metals such as Ru or Ni are incorporated into Pt.In our model study we present results of the adsorption and decomposition of methanol on a Pt-Ni ordered surface alloy prepared by Pt evaporation on Ni(111) surface, examined by conventional and synchrotron radiation XPS. Methanol adsorbed at low temperature formed adsorbate multilayers, which were consecutively desorbed upon heating to 600 K. Reaction intermediates arising during desorption were measured. Reaction pathways are discussed and compared with those obtained on a clean Ni(111) single crystal.

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Section: Resultssupporting

confidence: 81%

Photoemission study of methanol decomposition on Pt/Ni(111) surface alloy

Veltruská

Cabala

Libra

et al. 2010

Surface & Interface Analysis

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“…The C 1s signal intensity during the annealing procedure at 970 K is almost completely lost due to the higher solubility compared to 300 K. During cooling down to room temperature, however, the C 1s signal intensity appears again due to carbon atoms migrating back to the Ni surface. Carbon segregation on Ni was also observed by [7,8] and was actually applied for carbon enrichment experiments described in [1].…”

Section: Discussionmentioning

confidence: 79%

“…The binary system carbon/nickel is studied by various authors with respect to the application of Ni as a catalyst [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Eizenberg et al [1,2] doped different Ni crystal planes with carbon by holding the sample in a quartz capsule filled with graphite powder at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the surface orientation they observed a graphite monolayer condensation in a temperature range of 100 K until the carbon was completely lost into the bulk. Other authors prepared carbon films by thermal decomposition of hydrocarbons or carbon monoxide [3][4][5][6][7][8][9][10][11][14][15][16]. Various measurement techniques and crystal planes, respectively, were used.…”

Section: Introductionmentioning

confidence: 99%

“…Rosei et al measured the structure of graphitic C on Ni(111) by surface extended energy loss fine structure (SEELFS) [6]. The graphite layer was deposited by thermal decomposition of CO at 570 K. Steinrück et al observed the adsorption and temperature dependent decomposition of hydrocarbons (propene, methanol) on Ni(100) by fast X-ray photoelectron spectroscopy (XPS) studies [7,8]. Several investigations dealt with a surface reconstruction called 'clock reconstruction', observed on Ni(100) and Ni(111) measured by scanning tunneling mi- * Tel.…”

Section: Introductionmentioning

confidence: 99%

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Thermally induced reaction and diffusion of carbon films on Ni(111) and Ni(100)

Wiltner

Linsmeier

2008

Surface Science

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Thin carbon films on Ni(111) and Ni(100) and the reactive and diffusive interactions between film and substrate are investigated using X-ray photoelectron spectroscopy (XPS). The carbon films are deposited from the vapor phase with the substrates at room temperature. After deposition the films contain mainly elemental carbon. Restricted only to the carbon-nickel interface carbidic carbon is observed. Carbon films of various thicknesses between 0.4 and 3.2 nm are investigated after thermal treatments up to 970 K. The C 1s signal intensities are used for chemical analysis, both in a qualitative and quantitative way. The initially formed carbide partially decomposes between 400 and 570 K. Additional carbide formation sets in again, combined with incipient carbon diffusion, at higher temperatures. Carbon diffusion into the bulk leads to a decreasing C 1s signal intensity until the carbon is almost completely lost into the bulk.

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Analysis of Functional Materials by X‐ray Photoelectron Spectroscopy

Wilson

Lee

2013

Local Structural Characterisation

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An in situ photoemission study of the dehydrogenation reaction of methanol on Ni()

Cited by 26 publications

References 24 publications

Photoemission study of methanol decomposition on Pt/Ni(111) surface alloy

Photoemission study of methanol decomposition on Pt/Ni(111) surface alloy

Thermally induced reaction and diffusion of carbon films on Ni(111) and Ni(100)

Analysis of Functional Materials by X‐ray Photoelectron Spectroscopy

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