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

Autor:	G. Wedler, D. Borgmann, R. Kleyna, S. Fickert
Rok vydání:	1998
Předmět:	Hydrogen Thermal desorption spectroscopy Analytical chemistry Thermal desorption chemistry.chemical_element Butane Surfaces and Interfaces Condensed Matter Physics Propene chemistry.chemical_compound Nickel Adsorption chemistry Propane Electrochemistry General Materials Science Spectroscopy
Zdroj:	Langmuir. 14:5464-5468
ISSN:	1520-5827 0743-7463
Popis:	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...
Databáze:	OpenAIRE
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