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

  • Runnong Yang
  • Yumei Liu
  • Lin Yu
  • Xiangyun Zhao
  • Xiaobo Yang
  • Ming Sun
  • Junyin Luo
  • Qun Fan
  • Jianming Xiao
  • Yuzhong Zhao
Research Paper
  • 70 Downloads

Abstract

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 °C, it retains CeO2-ZrO2 nanocrystallites of the size around 5 nm, a BET-specific surface area of 165 m2/g, and an oxygen storage capacity of 468 μmol/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.

Keywords

Ceria-zirconia nanocrystallites Silica matrices Thermal stability Oxygen storage capacity Three-way catalyst 

Notes

Funding information

This work was financially supported by the National Natural Science Foundation of China (21576054) and the Scientific Project of Guangdong Province (2016B020241003).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhouPeople’s Republic of China
  2. 2.Waygreen Technologies, Inc.GuangzhouChina

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