Renken, A.2006-04-182006-04-182006-04-181990https://infoscience.epfl.ch/handle/20.500.14299/229364An exptl. set-up for the simultaneous detn. of reactant concn. in the gas phase and on the surface by spectroscopic methods was proposed to obtain information on the intrinsic kinetics of unsteady-state processes undergoing heterogeneous catalysis. The hydrogenation of CO and CO2 and the effect of the water-gas shift were discussed. Transient expts. were not always sufficient for model discrimination. Among models describing steady-state and transient behavior of the addn. of AcOH to C2H4 and of elimination reactions, model discrimination was possible only on the basis of forced concn. expts. [on SciFinder (R)]Water gas shift reaction (in unsteady-state modeling of hydrogenation)Kinetics of elimination reaction (modeling ofunsteady-state)Kinetics of addition reaction (of acetic acid to ethylenemodeling ofunsteady-state)Kinetics of hydrogenation (okinetics model unsteady statehydrogenation carbon oxide modeladdn ethylene acetic acid modelelimination reaction kinetic modeltext::conference output::conference proceedings::conference paper