%0 Book Section %1 statphys23_0302 %A Ewen, J.S. Mc %A Gaspard, P. %A Bocarmé, T. Visart De %A Kruse, N. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K catalysis density field functional ion kinetics microscopy models oscillations statphys23 surface theory topic-6 %T Kinetic oscillations and bistability in the catalytic formation of water on rhodium tips in high electric fields: A comprehensive analysis %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=302 %X A comprehensive theory of the catalytic formation of water on rhodium tips in high electric fields is performed. The kinetic parameters are obtained through experimental data and density functional theory calculations of O and H adsorbed on rhodium clusters and at low indexed rhodium surfaces as a function of coverage and the electric field. A kinetic mean field model is then setup and generalized to all of surface orientations present on the rhodium tip. The theory is consistent with the coverage and temperature dependence of the total sticking coefficient and the temperature-programmed desorption rates of O$_2$ on Rh(111), Rh(110) and Rh(100). It is also consistent with the temperature-programmed desorption rates of H$_2$ on these three surfaces as well. The experimental evidence of subsurface oxygen is found to be necessary in the model. The model reproduces the existence region for kinetic oscillations in good agreement with field ion microscopy experiments and exhibits a good agreement with the observed bistability region.

@incollection{statphys23_0302, abstract = {A comprehensive theory of the catalytic formation of water on rhodium tips in high electric fields is performed. The kinetic parameters are obtained through experimental data and density functional theory calculations of O and H adsorbed on rhodium clusters and at low indexed rhodium surfaces as a function of coverage and the electric field. A kinetic mean field model is then setup and generalized to all of surface orientations present on the rhodium tip. The theory is consistent with the coverage and temperature dependence of the total sticking coefficient and the temperature-programmed desorption rates of O$_2$ on Rh(111), Rh(110) and Rh(100). It is also consistent with the temperature-programmed desorption rates of H$_2$ on these three surfaces as well. The experimental evidence of subsurface oxygen is found to be necessary in the model. The model reproduces the existence region for kinetic oscillations in good agreement with field ion microscopy experiments and exhibits a good agreement with the observed bistability region.}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Ewen, J.S. Mc and Gaspard, P. and Bocarm\'{e}, T. Visart De and Kruse, N.}, biburl = {https://www.bibsonomy.org/bibtex/2002693c707a071aa9c58d9a6a63c4664/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {72b8f90eaafd16914bed605bcbdb93cd}, intrahash = {002693c707a071aa9c58d9a6a63c4664}, keywords = {catalysis density field functional ion kinetics microscopy models oscillations statphys23 surface theory topic-6}, month = {9-13 July}, timestamp = {2007-06-20T10:16:16.000+0200}, title = {Kinetic oscillations and bistability in the catalytic formation of water on rhodium tips in high electric fields: A comprehensive analysis}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=302}, year = 2007 }