Oxidic or metallic palladium: Which is the active phase in Pd-catalyzed aerobic alcohol oxidation?

Article Abstract:

A palladium catalyst is compared in its oxidized and reduced state by investigating the catalytic activity and the catalyst structure during the aerobic oxidation of benzyl alcohol before and after reduction of the catalyst in hydrogen. The results show that the palladium oxide exhibits hardly any catalytic activity for alcohol oxidation at 50 degrees Celsius whereas metallic Pd particles are much more active.

Industrial Gas Manufacturing, Industrial gases, Hydrogen, Structure

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On the coverage-dependent adsorption geometry of benzene adsorbed on Pd{111}: a study by fast XPS and NEXAFS

Article Abstract:

Fast XPS data obtained during benzene uptake on Pd{111} are consistent with those obtained during benzene desorption, and both are in accord with the corresponding NEXAFS results. At low coverages benzenes initially adopts a flat-lying geometry on Pd{111}, bonding via the aromatic pi-electron system, which desorbs in the range 250-600 K.

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In-situ FTIR study of adsorption and photoreactions of CH2Cl2 on powdered TiO2

Article Abstract:

The Fourier transform infrared spectroscopy is used to investigate the adsorption and photoreactions of CH2Cl2 on powdered titanium oxide. The procedures used in the study are explained.

Alkalies and chlorine, Alkalies and Chlorine Manufacturing, Chlorine, Usage, Optical properties, Hydrocarbons, Infrared spectroscopy, Chemical properties

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