期刊
CATALYSIS LETTERS
卷 149, 期 7, 页码 1919-1933出版社
SPRINGER
DOI: 10.1007/s10562-019-02779-7
关键词
Monolithic catalysts; Perovskite; Hydrocarbons; Catalytic oxidation; Heterogeneous catalysis
资金
- Polish Ministry of Science and Higher Education [0401/0157/18]
La1-xAgxFeO3 (x=0.05-0.25) perovskites deposited on a honeycomb-shaped monolithic metallic support were used as catalysts for the total oxidation of hydrocarbons. Monolithic catalysts were prepared by washcoating honeycomb substrates with lanthanum-stabilized -Al2O3, on which La1-xAgxFeO3 was deposited. Catalysts with La1-xAgxFeO3 perovskites show higher activity for methane oxidation at x0.05 and hexane oxidation at x0.1 than LaFeO3 catalyst. The perovskite catalysts were characterized by XRD, XPS, SEM, TEM, TPR-H-2, O-2-TPD and BET specific surface area measurement. Ag forms solid solutions with the La1-xAgxFeO3 perovskite lattice for x=0.05-0.1. In La1-xAgxFeO3 perovskites (x0.1), Ag-0 particles with average crystallite sizes from 31 to 41nm were also identified. When Ag is introduced into the LaFeO3 perovskite, both the changes occurring after some Ag is incorporated into its structure and the presence of large crystallites of metallic silver contribute to the catalysts' activity increase. [GRAPHICS] .
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据