Citation: ZHANG Xi, WU Zhi-wei, ZHU Hua-qing, LI Shi-ying, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Controllable synthesis of a 3D flower-like CeTiO_x composite oxide exposing CeO₂{100} plane and it supported Au catalyst for CO oxidation[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(6): 697-706. shu

Controllable synthesis of a 3D flower-like CeTiO_x composite oxide exposing CeO₂{100} plane and it supported Au catalyst for CO oxidation

ZHANG Xi ^1,2 ,
WU Zhi-wei ^1,*,, ,
ZHU Hua-qing ¹ ,
LI Shi-ying ^1,2 ,
QIN Zhang-feng ^1,*,, ,
FAN Wei-bin ¹ ,
WANG Jian-guo ¹

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: WU Zhi-wei, wuzhiwei@sxicc.ac.cn QIN Zhang-feng, qzhf@sxicc.ac.cn
Received Date: 24 February 2017
Revised Date: 26 April 2017

Fund Project: Shanxi Province Science and Technology Research Project MQ2014-10the National Natural Science Foundation of China 21403268Shanxi Province Science and Technology Research Project MQ2014-11Strategic Priority Research Program of the Chinese Academy of Sciences XDA07060300

Figures(9)

In this work, a flower-like CeTiO_x composite oxide, predominantly exposing CeO₂{100} plane, was synthesized by a simple hydrothermal method. The SEM and XRD results revealed the growth mechanism of CeTiO_x composite oxide can be divided into two stages, including the rapid growth of amorphous and the following crystallization. The ratio of Ce/Ti, KOH concentration, crystallization time and calcination temperature are the key factors for the synthesis of the flower-like CeTiO_x composite oxide. Au catalyst supported on this composite oxide exhibited superior activity for CO oxidation at room temperature. The TEM and H₂-TPR results suggested that the exposed CeO₂{100} plane and the strong interaction between Au and CeTiO_x composite oxide are responsible for the high activity.
- CeO₂{100} plane,
- CeTiO_x composite oxide,
- hydrothermal method,
- gold catalyst,
- CO oxidation
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沈阳化工大学材料科学与工程学院沈阳 110142

Controllable synthesis of a 3D flower-like CeTiOx composite oxide exposing CeO2{100} plane and it supported Au catalyst for CO oxidation

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通讯作者: 陈斌, bchen63@163.com

Controllable synthesis of a 3D flower-like CeTiO_x composite oxide exposing CeO₂{100} plane and it supported Au catalyst for CO oxidation