One-dimensional confinement in heterogeneous catalysis: Trapped oxygen on RuO2(110) model catalysts

F. Hess; P.P.T. Krause; S.F. Rohrlack; J.P. Hofmann; A. Farkas; H. Over

doi:10.1016/j.susc.2012.04.019

One-dimensional confinement in heterogeneous catalysis: Trapped oxygen on RuO2(110) model catalysts

F. Hess, P.P.T. Krause, S.F. Rohrlack, J.P. Hofmann, A. Farkas, H. Over

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Abstract

With temperature programmed reaction (TPR) experiments and kinetic Monte Carlo (kMC) simulations of coadsorbed oxygen and HCl on the RuO2(110) surface we studied the thermal stabilization of dissociatively adsorbed oxygen. Due to one-dimensional confinement single surface O atoms can be trapped by surface chlorine atoms so that surface oxygen is not able to desorb from the RuO2(110) surface at the expected temperature of 420 K. Trapped oxygen needs desorption temperatures as high as 700 K where it recombines with bridging O from RuO2(110) to form O2. Kinetic modeling of catalytic reactions with dimensional confinement of their reaction intermediates on the catalyst's surface requires the application of kinetic Monte Carlo simulations which are beyond the mean field approach.

Original language	English
Pages (from-to)	L69-L73
Number of pages	5
Journal	Surface Science
Volume	606
Issue number	17-18
DOIs	https://doi.org/10.1016/j.susc.2012.04.019
Publication status	Published - 2012

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title = "One-dimensional confinement in heterogeneous catalysis: Trapped oxygen on RuO2(110) model catalysts",

abstract = "With temperature programmed reaction (TPR) experiments and kinetic Monte Carlo (kMC) simulations of coadsorbed oxygen and HCl on the RuO2(110) surface we studied the thermal stabilization of dissociatively adsorbed oxygen. Due to one-dimensional confinement single surface O atoms can be trapped by surface chlorine atoms so that surface oxygen is not able to desorb from the RuO2(110) surface at the expected temperature of 420 K. Trapped oxygen needs desorption temperatures as high as 700 K where it recombines with bridging O from RuO2(110) to form O2. Kinetic modeling of catalytic reactions with dimensional confinement of their reaction intermediates on the catalyst's surface requires the application of kinetic Monte Carlo simulations which are beyond the mean field approach.",

author = "F. Hess and P.P.T. Krause and S.F. Rohrlack and J.P. Hofmann and A. Farkas and H. Over",

year = "2012",

doi = "10.1016/j.susc.2012.04.019",

language = "English",

volume = "606",

pages = "L69--L73",

journal = "Surface Science",

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T1 - One-dimensional confinement in heterogeneous catalysis: Trapped oxygen on RuO2(110) model catalysts

AU - Hess, F.

AU - Krause, P.P.T.

AU - Rohrlack, S.F.

AU - Hofmann, J.P.

AU - Farkas, A.

AU - Over, H.

PY - 2012

Y1 - 2012

N2 - With temperature programmed reaction (TPR) experiments and kinetic Monte Carlo (kMC) simulations of coadsorbed oxygen and HCl on the RuO2(110) surface we studied the thermal stabilization of dissociatively adsorbed oxygen. Due to one-dimensional confinement single surface O atoms can be trapped by surface chlorine atoms so that surface oxygen is not able to desorb from the RuO2(110) surface at the expected temperature of 420 K. Trapped oxygen needs desorption temperatures as high as 700 K where it recombines with bridging O from RuO2(110) to form O2. Kinetic modeling of catalytic reactions with dimensional confinement of their reaction intermediates on the catalyst's surface requires the application of kinetic Monte Carlo simulations which are beyond the mean field approach.

AB - With temperature programmed reaction (TPR) experiments and kinetic Monte Carlo (kMC) simulations of coadsorbed oxygen and HCl on the RuO2(110) surface we studied the thermal stabilization of dissociatively adsorbed oxygen. Due to one-dimensional confinement single surface O atoms can be trapped by surface chlorine atoms so that surface oxygen is not able to desorb from the RuO2(110) surface at the expected temperature of 420 K. Trapped oxygen needs desorption temperatures as high as 700 K where it recombines with bridging O from RuO2(110) to form O2. Kinetic modeling of catalytic reactions with dimensional confinement of their reaction intermediates on the catalyst's surface requires the application of kinetic Monte Carlo simulations which are beyond the mean field approach.

U2 - 10.1016/j.susc.2012.04.019

DO - 10.1016/j.susc.2012.04.019

M3 - Article

SN - 0039-6028

VL - 606

SP - L69-L73

JO - Surface Science

JF - Surface Science

IS - 17-18

ER -

One-dimensional confinement in heterogeneous catalysis: Trapped oxygen on RuO2(110) model catalysts

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