Measurements and modeling of HO2 formation in the reactions of n-C3H7 and i-C3H7 radicals with O2

Article Abstract:

The formation of HO2 in the reactions of C2H5, n-C3H7, and i-C3H7 radicals with O2 is investigated using the technique of laser photolysis or long-path frequency-modulation spectroscopy. The alkyl radicals are formed by 266 nm photolysis of alkyl iodides with the concentration of I atoms being monitored by direct absorption of a second laser probe on the spin-orbit transition.

Chemical reactions, Chlorine compounds

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Direct observation of methyl radicals islanding on copper surface and its effect on the kinetics of catalytic reactions

Article Abstract:

The formation of methyl radicals into densely packed two-dimensional islands on the Cu(111) surface is directly observed for the first time by scanning tunneling microscopy (STM). From this investigation on methyl-solid interactions, we infer that the islanding phenomenon may be quite general in catalytic systems.

Copper, Surface chemistry

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Reactivity of hydroxyl radicals on hydroxylated quartz surface. 1. cluster model calculations

Article Abstract:

The interaction of a hydroxyl radical with cluster models of a hydroxylated alpha-quartz surface was studied by means of density functional calculations. Two reactive sites, the hydrogen of the silanol group and the surface-approximating silicon atom, of the silanol models were investigated.

Density functionals, Hydroxides, Density-functional theory

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