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.

引用

页数：13

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