Single electron traps at the surface of polycrystalline MgO: Assignment of the main trapping sites

Article Abstract:

A study carried out with the help of high-resolution electron spin resonance spectra and ab initio quantum chemical calculation shows that the paramagnetic centers consist of [H(super +)(e(super -)] electron pairs formed at morphological irregularities of the surface. This study compares a wide set of measured and computed g-factors and hyperfine coupling constants of the unpaired electron with the surrounding (super 25)Mg, (super 17)O, and (super 1)H nuclei.

Analysis, Spectra, Density functionals, Density functional theory, Chemical vapor deposition, Structure, Chemical properties, Chemical vapour deposition

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Time-scale and sequence of dynamic structural changes in an MgO-attached ruthenium cluster catalyst observed by in Situ time-resolved DXAFS

Article Abstract:

The unique catalysis of [Ru6C] clusters on MgO for CO/H2 conversion to oxygenated compounds such as methanol, formaldehyde, and dimethyl ether is presented. The structural change of the cluster framework before and after the catalytic CO/H2 reaction is discussed.

Science & research, Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Ruthenium, Research, Chemical reaction, Rate of, Chemical kinetics, Adsorption, Catalysis

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