On the mechanism of Cs promotion in ethylene epoxidation on Ag

Journal of the American Chemical Society
Suljo Linic, Mark A Barteau

Abstract

We have examined the mechanism by which Cs impacts the selectivity of ethylene epoxidation on silver. The main focus was analysis of promoter-intermediate and promoter-transition state interactions. We show that Cs enhances selectivity to EO by stabilizing the transition state involved in the formation of EO relative to the transition state that is involved in the combustion. It is found that adsorbed Cs induces significant electric fields over Ag(111). This effect can be understood in terms of simple dipole/dipole interactions where the transition state involved in the selective pathway has a favorable dipole orientation as compared to the transition state involved in combustion.

References

Jan 10, 2002·Journal of the American Chemical Society·Suljo Linic, Mark A Barteau
Apr 3, 2003·Journal of the American Chemical Society·Suljo Linic, Mark A Barteau
May 8, 2003·Journal of the American Chemical Society·Marie-Laure BocquetDavid A King

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Citations

Mar 29, 2011·Journal of the American Chemical Society·Jakub S JirkovskýPetr Krtil
Dec 22, 2009·Journal of the American Chemical Society·Ling ZhouRobert J Madix
Apr 30, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Stephen T MarshallJ William Medlin
Jun 7, 2005·Physical Chemistry Chemical Physics : PCCP·Vladimir P Zhdanov
Jul 1, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A PolitanoG Chiarello
Apr 10, 2018·Chemical Science·Emilia A CarbonioTravis E Jones
Sep 21, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M O OzbekR A Van Santen
Nov 21, 2007·Journal of the American Chemical Society·Jana Roithova, Detlef Schröder
Dec 27, 2005·The Journal of Physical Chemistry. B·Xiaoxing WangYe Wang
Mar 3, 2020·Chemical Science·M Alexander ArdaghPaul J Dauenhauer
May 2, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Prashant DeshlahraWilliam F Schneider
Mar 10, 2005·Journal of the American Chemical Society·Ad M J van der EerdenBert M Weckhuysen
Sep 15, 2005·Journal of the American Chemical Society·Ye XuManos Mavrikakis

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