Please wait a minute...
Acta Physico-Chimica Sinica  2009, Vol. 25 Issue (03): 561-566    DOI: 10.3866/PKU.WHXB20090327
PdO-CeO2 Composite Catalysts for Low Temperature CO Oxidation
 XIAO Xiao-Yan, LU Ji-Qing, SU Xiao-Wen, GUO Ming, LUO Meng-Fei
Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang Province, P. R. China
Download:   PDF(351KB) Export: BibTeX | EndNote (RIS)      


A series of PdO-CeO2 composite catalysts were prepared using a co-precipitation method and tested for low temperature CO oxidation. The catalysts were further characterized by X-ray diffraction (XRD), the Brunauer-Emmett-Teller (BET) technique, chemisorption of CO, temperature programmed reduction (TPR), and a pulse reaction technique. Results of XRD indicated that CexPd1-xO2-δsolid solution was formed when the catalysts were calcined at 400-800 ℃, while PdOor metal Pd species re-migrated to the catalyst surface when it was calcined at a higher temperature (1000 ℃). The turnover frequency (TOF) for the CO oxidation reaction over these catalysts was found to be independent on the Pd particle size and it increased with increasing the content of CexPd1-xO2-δsolid solution in the catalyst. This suggests that the solid solution might be the active phase for the reaction. Furthermore, pulse reaction results indicated that oxidized Pd species were more active than metallic Pd.

Key wordsPdO-CeO2      CO oxidation      CexPd1-xO2-δ solid solution     
Received: 10 September 2008      Published: 19 December 2008
MSC2000:  O643  
Corresponding Authors: LUO Meng-Fei     E-mail:
Cite this article:

XIAO Xiao-Yan, LU Ji-Qing, SU Xiao-Wen, GUO Ming, LUO Meng-Fei. PdO-CeO2 Composite Catalysts for Low Temperature CO Oxidation. Acta Physico-Chimica Sinica, 2009, 25(03): 561-566.

URL:     OR

[1] HUANG Xue-Hui, SHANG Xiao-Hui, NIU Peng-Ju. Surface Modification of SBA-15 and Its Effect on the Structure and Properties of Mesoporous La0.8Sr0.2CoO3[J]. Acta Physico-Chimica Sinica, 2017, 33(7): 1462-1473.
[2] CHEN Mingshu. Toward Understanding the Nature of the Active Sites and Structure-Activity Relationships of Heterogeneous Catalysts by Model Catalysis Studies[J]. Acta Physico-Chimica Sinica, 2017, 33(12): 2424-2437.
[3] GU Yong-Bing, CAI Qiu-Xia, CHEN Xian-Lang, ZHUANG Zhen-Zhan, ZHOU Hu, ZHUANG Gui-Lin, ZHONG Xing, MEI Dong-Hai, WANG Jian-Guo. Theoretical Insights into Role of Interface for CO Oxidation on Inverse Al2O3/Au(111) Catalysts[J]. Acta Physico-Chimica Sinica, 2016, 32(7): 1674-1680.
[4] JIA Yong-Chang, WANG Shu-Yuan, MENG Lian, LU Ji-Qing, LUO Meng-Fei. Effects of Zr Addition on CO and CH4 Catalytic Oxidation over PdO/PdO/Ce1-xPdxO2-δ Catalyst[J]. Acta Physico-Chimica Sinica, 2016, 32(7): 1801-1809.
[5] HUANG Wei-Xin, QIAN Kun, WU Zong-Fang, CHEN Shi-Long. Structure-Sensitivity of Au Catalysis[J]. Acta Physico-Chimica Sinica, 2016, 32(1): 48-60.
[6] LI Xiao-Kun, MA Dong-Dong, ZHENG Yan-Ping, ZHANG Hong, DING Ding, CHEN Ming-Shu, WAN Hui-Lin. Performance of CO Oxidation over Highly Dispersed Gold Catalyst on TiOx/SiO2 Composite Supports[J]. Acta Physico-Chimica Sinica, 2015, 31(9): 1753-1760.
[7] LÜ Yong-Ge, LI Yong, TA Na, SHEN Wen-Jie. Morphology-Controlled Synthesis of Co3O4 Nanocubes and Their Catalytic Performance in CO Oxidation[J]. Acta Physico-Chimica Sinica, 2014, 30(2): 382-388.
[8] LIANG Qian, ZHAO Zhen, LIU Jian, WEI Yue-Chang, JIANG Gui-Yuan, DUAN Ai-Jun. Pd Nanoparticles Deposited on Metal-Organic Framework of MIL-53(Al):an Active Catalyst for CO Oxidation[J]. Acta Physico-Chimica Sinica, 2014, 30(1): 129-134.
[9] SUN Jing-Fang, GE Cheng-Yan, YAO Xiao-Jiang, CAO Yuan, ZHANG Lei, TANG Chang-Jin, DONG Lin. Preparation of NiO/CeO2 Catalysts by Solid State Impregnation and Their Application in CO Oxidation[J]. Acta Physico-Chimica Sinica, 2013, 29(11): 2451-2458.
[10] LI Na, CHEN Qiu-Yan, LUO Meng-Fei, LU Ji-Qing. Kinetics Study of CO Oxidation Reaction over Pt/TiO2 Catalysts[J]. Acta Physico-Chimica Sinica, 2013, 29(05): 1055-1062.
[11] WANG Fang, WANG Cai-Hong, LI Da-Zhi. Novel Method of Controlling Formation of Hot-Spot over Gold Catalysts for CO Oxidation[J]. Acta Physico-Chimica Sinica, 2012, 28(06): 1455-1460.
[12] DONG Hua-Qing, PAN Xi, XIE Qin, MENG Qiang-Qiang, GAO Jian-Rong, WANG Jian-Guo. CO Adsorption and Oxidation on Metal-Doped TiO2 Nanotube Arrays[J]. Acta Physico-Chimica Sinica, 2012, 28(01): 44-50.
[13] YANG Zhi-Qiang, MAO Dong-Sen, WU Ren-Chun, YU Jun, WANG Qian. Preparation of CuO-Ce0.6Zr0.4O2 by Microwave Heating Decomposition and Its Catalytic Property for CO Oxidation[J]. Acta Physico-Chimica Sinica, 2011, 27(05): 1163-1168.
[14] HU Jian-Ping, WANG Jun, TANG Dian-Yong, FU Qin-Chao, ZHANG Yuan-Qin. Reaction Mechanisms of CO Oxidation Catalyzed by Binary Copper Group Cluster Anions[J]. Acta Physico-Chimica Sinica, 2011, 27(02): 329-336.
[15] YANG Zhi-Qiang, MAO Dong-Sen, GUO Qiang-Sheng, GU Lei. Effect of Preparation Method on the Activity of CuO/CeO2-ZrO2 Catalysts for Low Temperature CO Oxidation[J]. Acta Physico-Chimica Sinica, 2010, 26(12): 3278-3284.