Citation: DU Jun-Chen, MA Jiang-Li, WANG Feng-Jun, YANG Dong-Xia, ZHENG Ting-Ting, ZHAO Yun-Kun. Catalytic Oxidation of C₃H₆ and CO over Pt/ZrO₂-Al₂O₃ Catalyst[J]. Chinese Journal of Inorganic Chemistry, ;2018, 34(4): 800-806. doi: 10.11862/CJIC.2018.088 shu

Catalytic Oxidation of C₃H₆ and CO over Pt/ZrO₂-Al₂O₃ Catalyst

1.
State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China
2.
State-Local Joint Engineer Laboratory of Precious Metals Catalytic Technology and Application, Kunming Sino-platinum Metals Catalysts Co., Ltd., Kunming 650106, China
3.
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China

Corresponding author: YANG Dong-Xia, doris.yang@spmcatalyst.com ZHAO Yun-Kun, yk.zhao@spmcatalyst.com
Received Date: 8 December 2017
Revised Date: 17 January 2017

Figures(5)

The ZrO₂-Al₂O₃ composite oxides with different mass ratio of ZrO₂ to Al₂O₃ were prepared by co-precipitation method. 1.5%Pt/ZrO₂-Al₂O₃ (w/w) serial catalysts were prepared by isovolume impregnation method. The catalytic performance for C₃H₆ and CO oxidation show that Pt/Zr(0.4)-Al catalyst owns the most excellent catalytic activity. The temperature of light-off (T₅₀) and the complete conversion temperature (T₉₀) were less than 125 and 150℃ respectively. The effects of catalyst phase structure, specific surface area and particle size on the catalytic activity were investigated by XRD, N₂ adsorption-desorption, H₂-TPR and CO pulse adsorption. It is found that ZrO₂-Al₂O₃ composite oxides have the mesoporous texture, large specific surface area, and a new phase of Al_xZr_1-xO_y solid solution was also produced. The mass ratio of ZrO₂ to Al₂O₃ is the key to improving the interaction between Pt and ZrO₂-Al₂O₃, promoting the dispersion of Pt and enhancing the low temperature oxidation activity of Pt/ZrO₂-Al₂O₃ catalyst.
- HC&CO oxidation,
- platinum based catalyst,
- ZrO₂-Al₂O₃,
- size effect,
- exhaust purification
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Catalytic Oxidation of C₃H₆ and CO over Pt/ZrO₂-Al₂O₃ Catalyst