Hejral U1,2,3, Müller P1,2,3, Balmes O4,5, Pontoni D5, Stierle A1,2,3.
Nat Commun. 2016 Mar 9;7:10964. doi: 10.1038/ncomms10964.Nanoparticle sintering during catalytic reactions is a major cause for catalyst deactivation. Understanding its atomic-scale processes and finding strategies to reduce it is of paramount scientific and economic interest. Here, we report on the composition-dependent three-dimensional restructuring of epitaxial platinum-rhodium alloy nanoparticles on alumina during carbon monoxide oxidation at 550 K and near-atmospheric pressures employing in situ high-energy grazing incidence x-ray diffraction, online mass spectrometry and a combinatorial sample design. Read More