Günther Rupprechter received his Ph.D. in Physical Chemistry from the University of Innsbruck (Austria). After being a postdoctoral fellow at the University of California at Berkeley and the Lawrence Berkeley National Laboratory, he became the group leader for Laser Spectroscopy and Catalysis at the Fritz Haber Institute of the Max Planck Society in Berlin (Germany) from 1999 to 2005. In 2005 he accepted a Full Professorship in Surface and Interface Chemistry at Technische Universität Wien (Austria). His research emphasis is on heterogeneous catalysis, particularly in situ (operando) spectroscopy/microscopy on the model and technological catalysts, applied to studies of the mechanisms and kinetics of processes relevant to energy and environment: hydrogen as a clean fuel, methane reforming, CO2 hydrogenation and more efficient automotive pollution abatement. In 2005 he received the Jochen Block Award from the German Catalysis Society for “the application of surface science methods to heterogeneous catalysis”. He became a corresponding member of the Austrian Academy of Sciences in 2012 and a Fellow of the European Academy of Sciences (EurASc) in 2023. He is an Editorial Board Member of “Catalysis Letters” and “Topics in Catalysis”, and Vice-Chair of the Austrian Catalysis Society. He is “Director of Research” (Speaker) of the FWF-funded Cluster of Excellence “Materials for Energy Conversion and Storage (MECS)”.