Mauro Graziani

TL;DR: In this paper, the use of CeO 2 -based materials in the automotive three-way catalysts (TWCs) is considered, and the multiple roles of COO 2 as a TWC promoter and in particular the oxygen storage/release capacity (OSC) are critically discussed.

TL;DR: In this paper, it is shown that incorporation of ZrO2 into a solid solution with CeO2 strongly promotes bulk reduction of the Rh-loaded solid solutions in comparison to a Rh/CeO2 sample.

TL;DR: In this article, the reduction/oxidation behavior of high surface area CeO2 and Ce0.5Zr 0.5O2 mixed oxide is compared, and it is shown that the introduction of ZrO2 into the Ce2 framework with formation of a solid solution strongly modifies the reduction behaviour in comparison to that seen with CeO 2 alone, and that the expansion/contraction of the lattice parameter upon, respectively, reduction andoxidation, detected by X-ray diffraction, is responsible for the textural modification.

TL;DR: Catalysts have played a major role in transforming resources to useful products as discussed by the authors, and it is not surprising within the extant climate that researchers are now increasing their efforts and focusing their priorities on improving and discovering more efficient and selective catalysts.

TL;DR: In this article, computer simulation techniques have been used to model cubic CeO2−ZrO2 solid solutions in the whole composition range and the energetics of the Ce4+/Ce3+ bulk reduction reaction as well as the activation energy for oxygen migration in the lattice are investigated.