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Simulation of methanol adsorption on Pt/Ru catalysts

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Christov,  Mihai
Process Systems Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;
Dep. of Physical Chemistry, Sofia Bulgaria (2nd Aff.);
Univ. of Chemical Technology and Metallurgy,;

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Sundmacher,  Kai
Process Systems Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;
Otto-von-Guericke-Universität Magdeburg, External Organizations;

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Citation

Christov, M., & Sundmacher, K. (2003). Simulation of methanol adsorption on Pt/Ru catalysts. Surface Science, 547, 1-8. doi:10.1016/j.susc.2003.09.020.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-9FC5-0
Abstract
The irreversible adsorption of methanol on Pt/Ru catalysts is studied by simulation of the adsorption process on square and hexagonal lattice. It is assumed that three adjacent Pt sites are needed. The maximum degree of coverage is determined as a function of the Ru surface content. A simple first order adsorption kinetic equation, taking the maximum degrees of coverage into account, fits the simulation results well. It is shown that catalysts containing 10 to 30% Ru should have the best catalytic properties at low temperatures.