Liquid-Phase Cyclohexene Oxidation with O₂ over Spray-Flame-Synthesized La_1-x Sr_x CoO₃ Perovskite Nanoparticles.

ABSTRACT: La_1-x Sr_x CoO₃ (x=0, 0.1, 0.2, 0.3, 0.4) nanoparticles were prepared by spray-flame synthesis and applied in the liquid-phase oxidation of cyclohexene with molecular O₂ as oxidant under mild conditions. The catalysts were systematically characterized by state-of-the-art techniques. With increasing Sr content, the concentration of surface oxygen vacancy defects increases, which is beneficial for cyclohexene oxidation, but the surface concentration of less active Co²⁺ was also increased. However, Co²⁺ cations have a superior activity towards peroxide decomposition, which also plays an important role in cyclohexene oxidation. A Sr doping of 20 at. % was found to be the optimum in terms of activity and product selectivity. The c

SUBMITTER: Buker J 

PROVIDER: S-EPMC9293428 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature