A composite material with CeO2-ZrO2 nanocrystallines embedded in SiO2 matrices and its enhanced thermal stability and oxygen storage capacity

被引：3
|
作者：
Yang, Runnong [1 ]
Liu, Yumei [1 ,2 ]
Yu, Lin [1 ]
Zhao, Xiangyun [2 ]
Yang, Xiaobo [1 ,2 ]
Sun, Ming [1 ]
Luo, Junyin [1 ]
Fan, Qun [1 ,2 ]
Xiao, Jianming [2 ]
Zhao, Yuzhong [2 ]
机构：
[1] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Key Lab Clean Chem Technol Guangdong Regular High, Guangzhou 510006, Guangdong, Peoples R China
[2] Waygreen Technol Inc, Guangzhou 511441, Guangdong, Peoples R China
来源：
JOURNAL OF NANOPARTICLE RESEARCH | 2018年 / 20卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Ceria-zirconia nanocrystallites; Silica matrices; Thermal stability; Oxygen storage capacity; Three-way catalyst; CEO2-ZRO2 MIXED OXIDES; CERIA-ZIRCONIA; CO OXIDATION; SILICA; NANOPARTICLES; CATALYSTS; SUPPORTS; ALUMINA; PERFORMANCE; REDUCTION;
D O I：
10.1007/s11051-018-4255-x
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A simple hydrothermal procedure is introduced, which leads to the successful synthesis of a new composite material with fine CeO2-ZrO2 nanocrystallites embedded in amorphous and porous SiO2 matrices. The composite material possesses an extraordinary high thermal stability. After being calcined at 1000 \s=deg\C, it retains CeO2-ZrO2 nanocrystallites of the size around 5 nm, a BET-specific surface area of 165 m(2)/g, and an oxygen storage capacity of 468 \g=m\mol/g. No phase segregation for CeO2-ZrO2 nanocrystallites is detected and the SiO2 matrices remain not crystallized. The composite material shows a great potential as a support of three-way catalyst, as evidenced in catalytic tests with supported Pt.
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页数：13
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