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Title: Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface

Abstract

A detailed investigation of the coadsorption of ethylene with both preadsorbed hydrogen and preadsorbed carbon monoxide on the Ru(001) surface is reported here. Both preadsorbed hydrogen and carbon monoxide reduce the saturation coverage of subsequently chemisorbed ethylene. The coadsorption of hydrogen with ethylene results in detectable hydrogenation of ethylene to ethane below 250 K, whereas no self-hydrogenation of ethylene to ethane is observed. High-resolution electron energy loss spectra show that ethylene coadsorbed with either hydrogen or carbon monoxide decomposes to ethylidyne (CCH/sub 3/) and acetylide (CCH), as it does on the clean surface. Carbon monoxide preadsorption enhances the stability of the ethylidyne such that it decomposes at approximately 420 K, rather than 355 K as on the initially clean Ru(001) surface. Preadsorbed carbon monoxide also reduces the ratio of ethylidyne to acetylide that is formed from ethylene, compared to the ratio observed from an equivalent coverage of ethylene on the clean surface; hydrogen preadsorption, on the other hand, increases this ratio.

Authors:
; ;
Publication Date:
Research Org.:
California Institute of Technology, Pasadena
OSTI Identifier:
7252339
Resource Type:
Journal Article
Journal Name:
J. Am. Chem. Soc.; (United States)
Additional Journal Information:
Journal Volume: 108:23
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CARBON MONOXIDE; ADSORPTION; ETHYLENE; HYDROGENATION; HYDROGEN; RUTHENIUM; SORPTIVE PROPERTIES; EXPERIMENTAL DATA; TEMPERATURE DEPENDENCE; ALKENES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; DATA; ELEMENTS; HYDROCARBONS; INFORMATION; METALS; NONMETALS; NUMERICAL DATA; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; SORPTION; SURFACE PROPERTIES; TRANSITION ELEMENTS; 400201* - Chemical & Physicochemical Properties; 400201 - Chemical & Physicochemical Properties

Citation Formats

Hills, M M, Parmeter, J E, and Weinberg, W H. Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface. United States: N. p., 1986. Web. doi:10.1021/ja00283a014.
Hills, M M, Parmeter, J E, & Weinberg, W H. Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface. United States. https://doi.org/10.1021/ja00283a014
Hills, M M, Parmeter, J E, and Weinberg, W H. 1986. "Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface". United States. https://doi.org/10.1021/ja00283a014.
@article{osti_7252339,
title = {Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface},
author = {Hills, M M and Parmeter, J E and Weinberg, W H},
abstractNote = {A detailed investigation of the coadsorption of ethylene with both preadsorbed hydrogen and preadsorbed carbon monoxide on the Ru(001) surface is reported here. Both preadsorbed hydrogen and carbon monoxide reduce the saturation coverage of subsequently chemisorbed ethylene. The coadsorption of hydrogen with ethylene results in detectable hydrogenation of ethylene to ethane below 250 K, whereas no self-hydrogenation of ethylene to ethane is observed. High-resolution electron energy loss spectra show that ethylene coadsorbed with either hydrogen or carbon monoxide decomposes to ethylidyne (CCH/sub 3/) and acetylide (CCH), as it does on the clean surface. Carbon monoxide preadsorption enhances the stability of the ethylidyne such that it decomposes at approximately 420 K, rather than 355 K as on the initially clean Ru(001) surface. Preadsorbed carbon monoxide also reduces the ratio of ethylidyne to acetylide that is formed from ethylene, compared to the ratio observed from an equivalent coverage of ethylene on the clean surface; hydrogen preadsorption, on the other hand, increases this ratio.},
doi = {10.1021/ja00283a014},
url = {https://www.osti.gov/biblio/7252339}, journal = {J. Am. Chem. Soc.; (United States)},
number = ,
volume = 108:23,
place = {United States},
year = {Wed Nov 12 00:00:00 EST 1986},
month = {Wed Nov 12 00:00:00 EST 1986}
}