The effects of hydrogen on thermal desorption of oxygen surface complexes Original Research Article

Temperature programmed desorption/reduction techniques have been applied to an investigation of the interaction of hydrogen with oxygen surface complexes and reactive sites on the surface of a resin char during thermal desorption. It is shown that the presence of hydrogen has a number of significant effects on the evolution patterns of the oxides of carbon and water vapor. A number of conclusions regarding the influence of hydrogen on oxidized carbon surfaces are presented, based upon analyses of the resultant TPD/TPR spectra for these samples. These results suggest that the interaction of hydrogen with oxygen surface complexes during temperature programmed experiments can be a useful “tool” in probing the nature and origin of surface species.