Modelling of hydrogen thermal desorption spectra

In this work, we report about development of computer model of hydrogen Thermal Desorption Spectra (TDS) using a combination of modified Kissinger approach and combined form of differential kinetic equation. For an individual TDS peak, the developed model allows to adequately fit the experimental TDS data using up to 6 parameters, including the activation energy of desorption and the pre-exponent factor. The fitting procedure also allows visualizing the reaction model function using the experimental TDS data. The model was verified for the nanostructured magnesium hydride prepared by high-energy ball milling of magnesium in hydrogen, including its composites with carbon and titanium.