Virginia TechCox, David F.Schulz, Kirk H.2014-05-142014-05-141990-05-01Cox, D. F.; Schulz, K. H., "Methanol decomposition on single-crystal cu2o," J. Vac. Sci. Technol. A 8, 2599 (1990); http://dx.doi.org/10.1116/1.5766780734-2101http://hdl.handle.net/10919/47984CH₃OD decomposition has been studied over the stoichiometric, nonpolar (111) and polar, copper_terminated (100) surfaces of Cu₂O. Thermal desorption studies for monolayer coverages of methanol at 90 K show similar conversions, but the product distributions vary significantly, indicating a structure sensitive reaction. The (111) surface shows a maximum selectivity for complete oxidative dehydrogenation to CO, while the (100) surface shows a maximum selectivity for partial dehydrogenation to CH₂O. Thermal desorptionspectroscopy (TDS) and x-ray photoelectron spectroscopy (XPS) data are consistent with a decomposition pathway which proceeds through a methoxy intermediate for both surfaces. Possible origins for the structure sensitivity are discussed.application/pdfen-USIn CopyrightMaterials science, coatings & filmsPhysics, appliedArticle - Refereedhttp://scitation.aip.org/content/avs/journal/jvsta/8/3/10.1116/1.576678https://doi.org/10.1116/1.576678