Methanol reactions over oxygen-modified Re surfaces: Influence of surface structure and oxidation

Article Abstract:

The study characterizes the different Re-O species formed on O-modified planar and faceted Re surfaces and on a thin-film oxide on Re(1231). On the planar and faceted surfaces the study concluded that methanol reacts via competing pathways of dehydration to CH2O and CO and nonselective decomposition to yield H2 and CO formed by recombinative desorption.

Methanol, Rhenium, Surface chemistry, Chemical properties

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Synthesis, structure, and acidic properties of MCM-41 functionalized with phosphate and titanium phosphate groups

Article Abstract:

Modification of Si-MCM-41 and Ti-MCM-41 with POCL3 afforded materials with a mesoporous framework and an acidic surface functionalized with silicon and titanium phosphate species. A combination of mesoporous structure with acidic properties makes the MCM-41 functionalized with phosphate groups promising for use as solid acid catalysts.

Molecular Sieves, Phosphates, Properties, Structure

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Structural effects of electrochemical oxidation of formic acid on single crystal electrodes of palladium

Article Abstract:

Structural effects on the rates of formic acid oxidation is studied on Pd(111), Pd(100), Pd(110), and Pd(S)-[n(100) x (111)] (n= 2-9) electrodes in 0.1 M HCl[O.sub.4] containing 0.1 M formic acid with the use of voltammetry. The adsorption geometry of the reaction intermediate is optimized by using density functional theory.

Palladium, Formic Acid, Electric properties, Adsorption, Density functionals, Density functional theory

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