Pd Loaded Mesoporous ZrO2-TiO2 Composite and Its CO Catalytic Oxidation Property

doi:10.3724/SP.J.1077.2013.12711

Journal of Inorganic Materials ›› 2013, Vol. 28 ›› Issue (9): 992-996.DOI: 10.3724/SP.J.1077.2013.12711

• Research Paper • Previous Articles Next Articles

Pd Loaded Mesoporous ZrO₂-TiO₂ Composite and Its CO Catalytic Oxidation Property

GONG Yun¹, CHEN Hang-Rong¹, CUI Xiang-Zhi¹, JIANG Wan², SHI Jian-Lin¹

(1.State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chnese Academy of Sciences, Shanghai 200050, China; 2 State Key Laboratory for Modification of Chemical Fibers and Polymer Mterials, Donghua University, Shanghai 201620, China)

Received:2012-11-26 Revised:2013-02-24 Published:2013-09-20 Online:2013-08-14
About author:GONG Yun. E-mail:gongyun1027@gmail.com
Supported by:
National Key Basic Research Program of China (2013CB933200); China National Funds for Distinguished Young Scientists (51225202);National Natural Science Foundation of China (51202278)

Abstract

Abstract: Mesoporous Pd/ZrO₂-TiO₂ and PdCu/ZrO2-TiO2 composites with high CO catalytic oxidation performance were successfully synthesized by using mesoporous ZrO₂-TiO₂as catalyst support. Both XRD and TEM results indicated that the Pd or Cu species could be homogeneously dispersed in the ZrO₂-TiO₂ support. The effects of different factors on the CO oxidation property were investigated, including the different kinds of catalyst supports, preparation methods and catalytic promoters. It was found that mesoporous ZrO₂-TiO₂ as the catalyst support exhibited higher catalytic performance for CO oxidation than mesoporous Al₂O₃ or SBA-15. In addition, the low-temperature catalytic activity of Pd/ZrO₂-TiO₂ catalyst prepared by one-step route was greatly enhanced in comparison with traditional impregnation method. More importantly, the co-loaded PdCu/ZrO₂-TiO₂ catalyst via one-step process showed the optimal catalytic activity for CO oxidation, and the corresponding complete conversion temperature reduced to 170℃, which was attributed to the interaction between the Pd and Cu species according to the O₂-TPD analysis.

Key words: Pd loaded catalysts, ZrO₂-TiO₂, CO oxidation, mesoporous structure

CLC Number:

TQ174

GONG Yun, CHEN Hang-Rong, CUI Xiang-Zhi, JIANG Wan, SHI Jian-Lin. Pd Loaded Mesoporous ZrO₂-TiO₂ Composite and Its CO Catalytic Oxidation Property[J]. Journal of Inorganic Materials, 2013, 28(9): 992-996.

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Pd Loaded Mesoporous ZrO₂-TiO₂ Composite and Its CO Catalytic Oxidation Property

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