Modelling high-temperature peak of TDS spectra of dehydrogenation

In the paper we consider the problems with moving bound that model the kinetics of hydrogen desorption from hydrides of metals. Change of phaze and desorption processes on the surface are taken into consideration. Equations are derived at various assumptions for the experimental method of thermal desorption spectrometry. As the high-temperature TDS-spectra peaks are considered, the diffusion may be assumed to be fast. Therefore ordinary differential equations are sufficient. We present the results of numerical experiments for the models with bulk and surface desorption.