Tailoring the chemical reactivity of nanomaterials at the atomic level is one of the most important challenges in catalysis research. This requires a fundamental understanding of the structural and chemical properties of nanoparticles (NP) and their dynamic evolution upon exposure to the reaction environment. The intrinsic complexity and heterogeneity of NPs, their interactions with the support, ligands and adsorbates, as well as reaction-driven transformations pose significant difficulties. This talk will provide new insights into the thermal hydrogenation of the green-house gas CO2 by taking advantage of a variety of cutting-edge experimental methods (AFM, TEM, NAP-XPS, XAFS, MS/GC). Important aspects that will be discussed are: (i) the design of size- and shape-controlled catalytically active NPs (Cu, Cu-Ni, Cu-Zn) (ii) the investigation of structure/composition-reactivity correlations in situ and under realistic operando reaction conditions, i.e., at high pressure (20-40 bar), (ii) the role of the NP support (SiO2, Al2O3, ZnO/Al2O3) on the catalytic performance. These results are expected to open up new routes for the reutilization of CO2 through its direct conversion into valuable chemicals and fuels such as methanol

Operando insight into the thermal hydrogenation of CO2

ACS Spring Meeting 2021

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