Gd-Bi-M-Ce-O (M = Cu, Zr, Ni, Co, Mn) ceria-based solid solutions for low temperature CO oxidation

被引：9
作者：
Zagaynov, Igor, V [1 ]
Shelepin, Ivan, V [1 ]
Konovalov, Anatoly A. [1 ]
Obraztsova, Ekaterina A. [2 ]
Naumkin, Alexander, V [3 ]
Bykov, Alexey, V [4 ]
Leontiev, Vladimir G. [1 ]
机构：
[1] Baikov Inst Met & Mat Sci, Moscow, Russia
[2] Prokhorov Gen Phys Inst, Moscow, Russia
[3] Nesmeyanov Inst Organoelement Cpds, Moscow, Russia
[4] Tver Tech Univ, Tver, Russia
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 06期
关键词：
Ceria; Solid solution; Nanoparticle; CO oxidation;
D O I：
10.1016/j.ceramint.2020.11.170
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ceria based solid solutions doped by Gd, Bi, and the third dopant were synthesized by the co-precipitation method with ultrasonic treatment, followed by calcination at the temperature of 500 degrees C. Characterization of the synthesized nanosystems by XRD, TEM, TG, Raman spectroscopy, FTIR, XPS was carried out. It is shown that all obtained powders of solid solutions crystallized into a cubic structure of the fluorite type, with an average particle size of 5-15 nm. The samples had a mesoporous structure of the pore diameter of 2-5 nm. The catalytic activity of Gd-Bi-M-Ce-O (M = Cu, Zr, Ni, Co, Mn) solid solutions was carried out. The catalyst Gd0.05Bi0.15Mn0.20Ce0.60O2 has the lowest oxidation temperature.
引用
收藏
页码：8142 / 8149
页数：8
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