Xe in solid matrix reaction of coadsorbed components on Pt(111) after impingement of energetic Xe atoms at 100 K;

(18)O2; samarium sesquioxide in gas T=700°C; Variation of catalyst.; Product distributionMechanism;

in neat (no solvent, gas phase) Kinetics; Rh/Al2O3-catalyst, pulse experiments at 200-500°C, influence of NO studied; MS;

in neat (no solvent) introducing (13)CO2 into glass bulb contg. H2(18)O, keeping for at leasta day at room temp.; release of CO2 isotopomer by slowly warming CO2/H2O mixture from liquid nitrogen temp.;