Morphological Effect of Ceria-Supported Platinum Catalyst on Low-Temperature Ethylene Oxidation

Surface-Modified CeO2-Octahedron-Supported Pt Nanoparticles as Ethylene Scavengers for Fruit Preservation

“…Our group recently studied the morphological effect of ceria-supported Pt catalyst on trace ethylene oxidation and found that compared to Pt/CeO 2 -rod and Pt/CeO 2 -cube, Pt/CeO 2 -octahedra exhibited the best ethylene catalytic performance due to more oxygen species created for favorable activation, leading to the least accumulation of intermediate species during the ethylene oxidation. 33 This result suggests that the CeO 2 -octahedral support plays a vital role in ethylene catalytic oxidation. Wang et al prepared an oxygen vacancy-rich CeO 2 by Ar plasma treatment for methanol oxidation and the resulting CeO 2loaded Pt catalyst exhibited more favorable catalytic performance induced by several factors including higher dispersion and smaller size of Pt due to plasma irradiation.…”

“…This is because the Gd dopant could form the Gd–Ce complex with less GdO 8 -type complexes, thus generating more oxygen vacancies and promoting oxygen replenishment. Our group recently studied the morphological effect of ceria-supported Pt catalyst on trace ethylene oxidation and found that compared to Pt/CeO 2 -rod and Pt/CeO 2 -cube, Pt/CeO 2 -octahedra exhibited the best ethylene catalytic performance due to more oxygen species created for favorable activation, leading to the least accumulation of intermediate species during the ethylene oxidation . This result suggests that the CeO 2 -octahedral support plays a vital role in ethylene catalytic oxidation.…”