Citation: ZHAO Ning, XIAO Yong, LU Huai-qian, HOU Bo, LI De-bao, JIA Li-tao. Effect of Ce/Zr molar ratio on the catalytic performance of Ru/Ce_xZr_1-xO₂ in the wet air oxidation of phenol[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(8): 1018-1024. shu

Effect of Ce/Zr molar ratio on the catalytic performance of Ru/Ce_xZr_1-xO₂ in the wet air oxidation of phenol

ZHAO Ning ^1,2 ,
XIAO Yong ^1,, ,
LU Huai-qian ^1,, ,
HOU Bo ¹ ,
LI De-bao ¹ ,
JIA Li-tao 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: XIAO Yong, xiaoyong@sxicc.ac.cn LU Huai-qian, huaiqianlu@gmail.com
Received Date: 4 April 2018
Revised Date: 3 June 2018

Figures(6)

A series of Ce_xZr_1-xO₂ catalysts with different Ce/Zr molar ratios were prepared by sol-gel method and characterized by X-ray diffraction (XRD), nitrogen sorption, Raman spectra, oxygen storage capacity (OSC), thermogravimetry (TG) and pyridine adsorption infrared (Py-FTIR) spectra; the performance of Ce_xZr_1-xO₂ in catalytic wet air oxidation (CWAO) of phenol was investigated. The results demonstrate that Ce_xZr_1-xO₂ solid solution is formed by doping ZrO₂ in CeO₂ and the OSC value of Ce_xZr_1-xO₂ increases with an increase in the content of ZrO₂. In comparison with pure CeO₂, Ce_xZr_1-xO₂ solid solution has more Lewis acid sites. The catalytic activity of Ce_xZr_1-xO₂ is related to both OSC and surface acidity; the Lewis acid sites are favorable for the complete oxidation of phenol, whereas high OSC may promote the carbonaceous deposition that leads to catalyst deactivation. The Ru/Ce_0.75Zr_0.25O₂ catalyst exhibits high activity in phenol oxidation; after reaction for 5 h at 160℃ and 2 MPa O₂, phenol conversion and total organic carbon (TOC) rate reach 100% and 99%, respectively.
- catalytic wet air oxidation,
- Ce-Zr solid solution,
- phenol,
- oxygen storage capacity,
- acidity,
- carbon deposit
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Effect of Ce/Zr molar ratio on the catalytic performance of Ru/CexZr1-xO2 in the wet air oxidation of phenol

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通讯作者: 陈斌, bchen63@163.com

Effect of Ce/Zr molar ratio on the catalytic performance of Ru/Ce_xZr_1-xO₂ in the wet air oxidation of phenol