Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 41, Pages 12817-12821Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201607230
Keywords
ab initio calculations; ethanol; isotopic labeling; reaction mechanisms; transient experiments
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Funding
- Long Term Structural Methusalem Funding by the Flemish Government, the Interuniversity Attraction Poles Programme Belgian State-Belgian Science Policy [P7/5]
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Ethanol dehydration to ethene is mechanistically decoupled from the production of higher hydrocarbons due to complete surface coverage by adsorbed ethanol and diethyl ether (DEE). The production of C3+ hydrocarbons was found to be unaffected by water present in the reaction mixture. Three routes for the production of C3+ hydrocarbons are identified: the dimerization of ethene to butene and two routes involving two different types of surface species categorized as aliphatic and aromatic. Evidence for the different types of species involved in the production of higher hydrocarbons is obtained via isotopic labeling, continuous flow and transient experiments complemented by UV/Vis characterization of the catalyst and abinitio microkinetic modeling.
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