Interaction of Acetylene with Films of the Transition Metals Iron, Nickel, and Palladium

Alter, W.; Borgmann, D.; Stadelmann, Matthias; Worn, M.; Wedler, G.

doi:10.1021/ja00101a024

Cited by 8 publications

(8 citation statements)

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“…At very high doses also butane can be detected. Therefore the main reaction under these conditions is the self-hydrogenation of propene with a small amount of carbon−carbon bond breaking and the desorption of the higher hydrocarbon butane, which might have been formed at lower propene coverages …”

Section: Discussionmentioning

confidence: 99%

“…Therefore the experiments were performed using a special UHV system made of Pyrex glass. Such a system has proved to be very suitable for investigations of this kind in earlier papers. − …”

Section: Methodsmentioning

confidence: 98%

“…The aim was to look for the coverage dependence of the formation of easily desorbable products, which have eluded observation by the methods referred to above. Isothermal reaction mass spectrometry (IRMS) has proven to be suitable in such cases, since it investigates the gas phase which is in isothermal equilibrium with the adsorbate. − IRMS is therefore supplementary to the spectroscopic methods that give information on the adsorbate. However, IRMS cannot be applied to single crystals, so that metal films have to be used as adsorbents.…”

Section: Introductionmentioning

confidence: 99%

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Interaction of Propene with Pure and Hydrogen-Precovered Nickel Films. Studied by Means of Isothermal Reaction Mass Spectrometry and Thermal Desorption Spectroscopy

Kleyna¹,

Fickert²,

Borgmann³

et al. 1998

Langmuir

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A special experimental setup was used to study the equilibrium gas composition after interaction of propene with pure thin polycrystalline nickel films and nickel films precovered with hydrogen under ultrahigh vacuum conditions. Isothermal reaction mass spectrometry allows the analysis of the gas phase composition under equilibrium conditions. The analyzed gas phase consists of desorbed reaction products formed in the adsorbate phase after adsorption of propene on nickel films at 273 K. This technique was combined with thermal desorption spectroscopy and measurements of adsorption-induced changes in the electrical resistance of the polycrystalline films. After interaction with pure nickel films, in addition to propene, hydrogen, methane, propane, and butane could be detected as reaction products. The interaction of propene with nickel films precovered with hydrogen leads to a higher yield of butane and additionally to the formation of pentane. Thermal desorption experiments carried out after adsorption of propene at 77 K show only desorption of hydrogen, when the propene coverage was small. At higher coverages also propene desorbed.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Interaction of Propene with Pure and Hydrogen-Precovered Nickel Films. Studied by Means of Isothermal Reaction Mass Spectrometry and Thermal Desorption Spectroscopy

Kleyna¹,

Fickert²,

Borgmann³

et al. 1998

Langmuir

Self Cite

View full text Add to dashboard Cite

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“…methane, ethane, butane and benzene), while C 3 and C 5 products were never found. It has been assumed frequently as well that the former is generated via hydrogen abstraction, C C bond breaking, dimerization, and trimerization of C 2 entities [24]. These basic surface reactions (e.g.…”

Section: Discussionmentioning

confidence: 99%

Low-temperature growth of carbon nanofiber using a vapor–facet–solid process

Weimer

Yang

et al. 2015

Materials Today Communications

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“…Previous research carried out under UHV conditions showed that the adsorption of C 2 H 2 on a Fe surface induces the formation of various hydrocarbons such as methane, ethane, butane and benzene, but no C3 and C5 products. It was always assumed that the former were created via hydrogen abstraction, C-C bond breaking, dimerization, and trimerization of C2 entities [122]. The literatures have shown that that adsorbed C 2 H 2 can dehydrogenize or couple on Ni surface to form a series of hydrocarbon molecules [123][124][125][126].…”

Section: Fundamental Reactionsmentioning

confidence: 99%

One-Dimensional Carbon Nanostructures: Low-Temperature Chemical Vapor Synthesis and Applications

Yang

Jiang

2016

Carbon Nanoparticles and Nanostructures

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Chemical vapor deposition (CVD) is a powerful method to synthesize various carbon nanostructures (e.g., carbon nanotubes). A conventional CVD process has to be carried out at the temperatures over 600°C. To extend the applications of carbon nanostructures, for example in the semiconductor industry, low-temperature synthesis processes are thus always pursued. In this chapter we review the CVD growth of carbon nanostructures at low temperatures (<450°C). These growth processes are discussed in detail with respect to the applied catalyst system, carbon source, reaction atmosphere, catalyst faces, morphology control as well as unique structural characteristics of grown products. For the low-temperature CVD growth, catalytic reaction occurring on the low index faces of a metal catalyst is a crucial issue, and the growth is rate-limited by surface diffusion. Instead of the classical Vapor-Liquid-Solid (VLS) growth mechanism, the growth mechanism at low temperatures is interpreted with a novel Vapor-Facet-Solid (VFS) mechanism. Due to their unique features, the synthesized carbon nanostructures are promising to be applied for interconnects in large-scale integrated circuits, field emission, microwave adsorption, and as the anode material of lithium ion secondary battery, etc.

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Interaction of Acetylene with Films of the Transition Metals Iron, Nickel, and Palladium

Cited by 8 publications

References 0 publications

Interaction of Propene with Pure and Hydrogen-Precovered Nickel Films. Studied by Means of Isothermal Reaction Mass Spectrometry and Thermal Desorption Spectroscopy

Interaction of Propene with Pure and Hydrogen-Precovered Nickel Films. Studied by Means of Isothermal Reaction Mass Spectrometry and Thermal Desorption Spectroscopy

Low-temperature growth of carbon nanofiber using a vapor–facet–solid process

One-Dimensional Carbon Nanostructures: Low-Temperature Chemical Vapor Synthesis and Applications

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