Structure-reactivity relationships in heterogeneous catalytic CO2 hydrogenation to CH4 and CO on low loaded precious metal catalysts

10.18453/rosdok_id00004614 Cisneros, Sebastian Sebastian Cisneros http://d-nb.info/gnd/1333898908 Structure-reactivity relationships in heterogeneous catalytic CO2 hydrogenation to CH4 and CO on low loaded precious metal catalysts Universität Rostock 2023 540 Chemistry & allied sciences 2023 en https://purl.uni-rostock.de/rosdok/id00004614 urn:nbn:de:gbv:28-rosdok_id00004614-6 The production of CH4 and CO via CO2 hydrogenation was studied on catalysts with low precious metal loading. CO2 methanation was investigated on Ru/TiO2 und Ru/ZrO2 catalysts with Ru < 1 wt.%. CO production was investigated on Au/ZrO2 and Au/TiO2 catalysts with < 0.1 wt.% Au. Notably the most O-defective catalysts showed the highest rates. In-situ spectroscopic assessments revealed distinct electronic metal-support interactions induced by electron transfer from the defects to the supported metal entities. This effect is proposed as driver for the catalytic enhancement.