Berlin 2015 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 83: Surface Chemistry and Growth

O 83.2: Vortrag

Donnerstag, 19. März 2015, 10:45–11:00, MA 144

Effect of hydrogen bonds on the adsorption and reactivity of alcohols on noble metal surfaces — •Rodrigo García–Muelas and Núria López — Institute of Chemical Research of Catalonia, Tarragona, Spain.

The adsorption and decomposition of alcohols on noble metals has been subject of theoretical studies as a potential renewable source of chemicals. These studies usually omitted the lateral interactions between vicinal alcohol molecules or functional groups, and the effect of the ubiquitous hydrogen bonds on the reactivity in the liquid–metal interface is still a matter of debate. We show that lateral interactions between OH groups can selectively stabilize the OH over CH dehydrogenation, thus altering the preferred reaction path for methanol decomposition on Pt(111). The presence of these lateral interactions can explain the apparent divergence between previous theoretical and experimental studies.