Please wait a minute...
Acta Phys. -Chim. Sin.  2010, Vol. 26 Issue (02): 331-337    DOI: 10.3866/PKU.WHXB20100201
Structure and Catalytic Property of Ce1-xFexO2 Mixed Oxide Catalysts for Low Temperature Soot Combustion
YAN Dong-Xia, WANG Hua, LI Kong-Zhai, WEI Yong-Gang, ZHU Xing, CHENG Xian-Ming
Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650024, P. R. China; Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Download:   PDF(1344KB) Export: BibTeX | EndNote (RIS)      


A series of Ce1-xFexO2 mixed oxides with different Ce/Fe molar ratios were prepared via hydrothermal method. The effect of Fe content on structure and porperty of the prepared catalysts were characterized by powder X-ray diffraction (XRD), BETspecific surface area, Raman spectroscopy, and H2 temperature-programmed reduction (H2-TPR) techniques. The performance of the catalysts for soot oxidation was evaluated by temperature-programmed oxidation (TPO). Results showed that Fe3+ did not readily dissolve into the ceria lattice and some Fe2O3 highly dispersed on the surface of ceria. Both the formation of Ce-Fe solid solution created sites (oxygen vacancies) for absorbing and activating oxygen, and the presence of surface Fe2O3 strongly improved the aging resistance of the catalysts. With well dispersed surface Fe2O3 and the largest dopant content, the Ce0.8Fe0.2O2 catalyst had the lowest Ti (262 ℃, ignition temperature of soot oxidation) and Tp (314 ℃, temperature of maximumevolution of CO2). Even after aging for long periods at high temperature, the Ti and Tp values for Ce0.8Fe0.2O2 were still relatively low, at 292 and 392 ℃, respectively, indicating high thermal stability.

Key wordsSoot combustion      Hydrothermal method      Ce1-xFexO2 mixed oxides      Solid solution      Interaction     
Received: 18 September 2009      Published: 08 December 2009
MSC2000:  O643  
Corresponding Authors: WANG Hua     E-mail:
Cite this article:

YAN Dong-Xia, WANG Hua, LI Kong-Zhai, WEI Yong-Gang, ZHU Xing, CHENG Xian-Ming. Structure and Catalytic Property of Ce1-xFexO2 Mixed Oxide Catalysts for Low Temperature Soot Combustion. Acta Phys. -Chim. Sin., 2010, 26(02): 331-337.

URL:     OR

[1] Yanhuan CHEN,Jiaofu LI,Huibiao LIU. Preparation of Graphdiyne-Organic Conjugated Molecular Composite Materials for Lithium Ion Batteries[J]. Acta Phys. -Chim. Sin., 2018, 34(9): 1074-1079.
[2] Yanfang SHEN,Longjiu CHENG. Electronic Stability of Eight-electron Tetrahedral Pd4 Clusters[J]. Acta Phys. -Chim. Sin., 2018, 34(7): 830-836.
[3] Jiale XU,Lei HU,Lu WANG,Jinxia DENG,Jun CHEN,Xianran XING. Controllable Thermal Expansion and Crystal Structure of (Fe1-xNix)ZrF6 Solid Solutions[J]. Acta Phys. -Chim. Sin., 2018, 34(4): 339-343.
[4] Changjiang LIU,Hongwen MA,Pan ZHANG. Thermodynamics of the Hydrothermal Decomposition Reaction of Potassic Syenite with Zeolite Formation[J]. Acta Phys. -Chim. Sin., 2018, 34(2): 168-176.
[5] Xinyi WANG,Lei XIE,Yuanqi DING,Xinyi YAO,Chi ZHANG,Huihui KONG,Likun WANG,Wei XU. Interactions between Bases and Metals on Au(111) under Ultrahigh Vacuum Conditions[J]. Acta Phys. -Chim. Sin., 2018, 34(12): 1321-1333.
[6] Wei-Yun XU,Li-Li WANG,Yi-Ming MI,Xin-Xin ZHAO. Effect of Adsorption of Fe Atoms on the Structure and Properties of WS2 Monolayer[J]. Acta Phys. -Chim. Sin., 2017, 33(9): 1765-1772.
[7] Yu HE,Yi-Bo WANG. B972-PFD: A High Accuracy Density Functional Method for Dispersion Correction[J]. Acta Phys. -Chim. Sin., 2017, 33(6): 1149-1159.
[8] Yu-Fen HUANG,Hai-Long ZHANG,Zheng-Zheng YANG,Ming ZHAO,Mu-Lan HUANG,Yan-Li LIANG,Jian-Li WANG,Yao-Qiang CHEN. Effects of CeO2 Addition on Improved NO Oxidation Activities of Pt/SiO2-Al2O3 Diesel Oxidation Catalysts[J]. Acta Phys. -Chim. Sin., 2017, 33(6): 1242-1252.
[9] Xiao-Wen WANG,Lei LI,Chang-Sheng WANG. A Scheme for Rapid Simulation of Anion-π Interactions Involving Halide Anions and Substituted Benzenes[J]. Acta Phys. -Chim. Sin., 2017, 33(4): 755-762.
[10] Shen-Hui LI,Jing LI,An-Min ZHENG,Feng DENG. Solid-State NMR Characterization of the Structure and Catalytic Reaction Mechanism of Solid Acid Catalysts[J]. Acta Phys. -Chim. Sin., 2017, 33(2): 270-282.
[11] Fang CHENG,Han-Qi WANG,Kuang XU,Wei HE. Preparation and Characterization of Dithiocarbamate Based Carbohydrate Chips[J]. Acta Phys. -Chim. Sin., 2017, 33(2): 426-434.
[12] Tao JING,Ying DAI. Development of Solid Solution Photocatalytic Materials[J]. Acta Phys. -Chim. Sin., 2017, 33(2): 295-304.
[13] Ren YAN,Lu LAI,Zi-Qiang XU,Feng-Lei JIANG,Yi LIU. Thermodynamics of the Interactions between Quantum Dots and Proteins[J]. Acta Phys. -Chim. Sin., 2017, 33(12): 2377-2387.
[14] Jing-Fei HOU,Yan-Lian YANG,Chen WANG. Molecular Mechanisms of Interface Interactions between Nanomaterials and Proteins[J]. Acta Phys. -Chim. Sin., 2017, 33(1): 63-79.
[15] Yu-Ling DENG,Lu YU,Qiang HUANG. A Multi-Target Docking System of Human Kinome[J]. Acta Phys. -Chim. Sin., 2016, 32(9): 2355-2363.