Regeneration of LOHC dehydrogenation catalysts: In-situ IR spectroscopy on single crystals, model catalysts, and real catalysts from UHV to near ambient pressure

⿢We examine the regeneration of Pt-based catalysts poisoned by LOHC degradation.⿢A microscopic mechanism of the removal of degradation products from Pt is proposed.⿢Results of our UHV studies on model catalysts are transferred to real catalysis.⿢Oxidative regeneration of Pt/alumina is possible under mild conditions (600 K).⿢The degree and temperature regime of regeneration depends on the catalyst morphology.