Nanometer oxide LaMnO3+λ and its counterparts with large particle size were comparatively studied for total oxidation of methane. XPS, TPR and nonstoichiometric oxygen (λ)analysis results identify that the nanometer...Nanometer oxide LaMnO3+λ and its counterparts with large particle size were comparatively studied for total oxidation of methane. XPS, TPR and nonstoichiometric oxygen (λ)analysis results identify that the nanometer chide contains more high valence cations, to which the adjacent lattice oxygen are responsible for total oxidation of methane at low temperature.展开更多
Nanometer perovskite-type complex oxide LaMnO3 with average size of 18.7nm was prepared by sol-gel method, and it exhibited much higher catelytic activity for complete oxidation of methane than that of LaMnO3 with lar...Nanometer perovskite-type complex oxide LaMnO3 with average size of 18.7nm was prepared by sol-gel method, and it exhibited much higher catelytic activity for complete oxidation of methane than that of LaMnO3 with large particle size. The increasing of catulytic activity may be attributed to the increasing of surface area and the change of surface structure for nanometer LaMnO3.展开更多
文摘Nanometer oxide LaMnO3+λ and its counterparts with large particle size were comparatively studied for total oxidation of methane. XPS, TPR and nonstoichiometric oxygen (λ)analysis results identify that the nanometer chide contains more high valence cations, to which the adjacent lattice oxygen are responsible for total oxidation of methane at low temperature.
基金Project supported by National Natural Science Foundation of China.
文摘Nanometer perovskite-type complex oxide LaMnO3 with average size of 18.7nm was prepared by sol-gel method, and it exhibited much higher catelytic activity for complete oxidation of methane than that of LaMnO3 with large particle size. The increasing of catulytic activity may be attributed to the increasing of surface area and the change of surface structure for nanometer LaMnO3.
