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Title: Thermal decomposition of ethylene oxide on Pd(111). Comparison of the pathways for the selective oxidation of ethylene and olefin metathesis

Abstract

The product distribution detected in the multimass temperature-programmed desorption of a saturated overlayer of ethylene oxide adsorbed on Pd(111) at [approximately] 180 K indicates that it decomposes to yield ethylene and acetaldehyde. These observations are interpreted by postulating that ethylene oxide reacts to form an oxymetallocycle. This is proposed to thermally decompose in a manner analogous to carbometallocycles that form during olefin metathesis catalysis by the reaction between an alkene and a surface carbene. Thus, the metallocycle can decompose to yield ethylene and deposit adsorbed atomic oxygen or undergo a [beta]-hydrogen transfer to form acetaldehyde. 25 refs., 2 figs., 1 tab.

Authors:
 [1];  [2];  [3]
  1. (Univ. of Cambridge (United Kingdom))
  2. (Univ. of Keele (United Kingdom))
  3. (Univ. of Wisconsin, Milwaukee, WI (United States))
Publication Date:
OSTI Identifier:
7069776
Resource Type:
Journal Article
Journal Name:
Langmuir; (United States)
Additional Journal Information:
Journal Volume: 10:3; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ETHYLENE; OXIDATION; HETEROCYCLIC COMPOUNDS; DESORPTION; PYROLYSIS; ACETALDEHYDE; ALKENES; AUGER ELECTRON SPECTROSCOPY; MASS SPECTROSCOPY; PALLADIUM; REACTION INTERMEDIATES; ALDEHYDES; CHEMICAL REACTIONS; DECOMPOSITION; ELECTRON SPECTROSCOPY; ELEMENTS; HYDROCARBONS; METALS; ORGANIC COMPOUNDS; PLATINUM METALS; SORPTION; SPECTROSCOPY; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENTS; 400201* - Chemical & Physicochemical Properties; 400102 - Chemical & Spectral Procedures

Citation Formats

Lambert, R.M., Ormerod, R.M., and Tysoe, W.T.. Thermal decomposition of ethylene oxide on Pd(111). Comparison of the pathways for the selective oxidation of ethylene and olefin metathesis. United States: N. p., 1994. Web. doi:10.1021/la00015a022.
Lambert, R.M., Ormerod, R.M., & Tysoe, W.T.. Thermal decomposition of ethylene oxide on Pd(111). Comparison of the pathways for the selective oxidation of ethylene and olefin metathesis. United States. doi:10.1021/la00015a022.
Lambert, R.M., Ormerod, R.M., and Tysoe, W.T.. Tue . "Thermal decomposition of ethylene oxide on Pd(111). Comparison of the pathways for the selective oxidation of ethylene and olefin metathesis". United States. doi:10.1021/la00015a022.
@article{osti_7069776,
title = {Thermal decomposition of ethylene oxide on Pd(111). Comparison of the pathways for the selective oxidation of ethylene and olefin metathesis},
author = {Lambert, R.M. and Ormerod, R.M. and Tysoe, W.T.},
abstractNote = {The product distribution detected in the multimass temperature-programmed desorption of a saturated overlayer of ethylene oxide adsorbed on Pd(111) at [approximately] 180 K indicates that it decomposes to yield ethylene and acetaldehyde. These observations are interpreted by postulating that ethylene oxide reacts to form an oxymetallocycle. This is proposed to thermally decompose in a manner analogous to carbometallocycles that form during olefin metathesis catalysis by the reaction between an alkene and a surface carbene. Thus, the metallocycle can decompose to yield ethylene and deposit adsorbed atomic oxygen or undergo a [beta]-hydrogen transfer to form acetaldehyde. 25 refs., 2 figs., 1 tab.},
doi = {10.1021/la00015a022},
journal = {Langmuir; (United States)},
issn = {0743-7463},
number = ,
volume = 10:3,
place = {United States},
year = {1994},
month = {3}
}