Methanol Adsorption and Oxidation on Reduced and Oxidized TbOx

Nov 3, 2016 - exposed the TbOx surfaces to ∼20 L of CH3OH at a sample temperature of 95 ... desorbing from CH3OH-exposed TbOx surfaces are CH3OH,...
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Article pubs.acs.org/JPCC

Methanol Adsorption and Oxidation on Reduced and Oxidized TbOx(111) Surfaces

A. Schaefer,*,† W. Cartas,‡ R. Rai,‡ M. Shipilin,† L. R. Merte,† E. Lundgren,† and J. F. Weaver*,‡ †

Division of Synchrotron Radiation Research, Lund University, Box 118, SE-221 00 Lund, Sweden Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States



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ABSTRACT: We used temperature-programmed reaction spectroscopy (TPRS) and synchrotron-radiation-based photoelectron spectroscopy (PES) to investigate the adsorption and oxidation of methanol (CH3OH) on Tb2O3(111) and TbO2(111) thin films grown on Pt(111). We find that methanol mainly desorbs from the Tb2O3 surface through both molecular and recombinative processes and that a relatively small amount of adsorbed methanol (