Pd负载型介孔ZrO2-TiO2复合材料的设计合成及其CO催化氧化性能研究

doi:10.3724/SP.J.1077.2013.12711

无机材料学报 ›› 2013, Vol. 28 ›› Issue (9): 992-996.DOI: 10.3724/SP.J.1077.2013.12711 CSTR: 32189.14.SP.J.1077.2013.12711

Pd负载型介孔ZrO₂-TiO₂复合材料的设计合成及其CO催化氧化性能研究

龚云¹, 陈航榕¹, 崔香枝¹, 江莞², 施剑林¹

（1. 中国科学院上海硅酸盐研究所, 高性能陶瓷和超微结构国家重点实验室, 上海200050; 2.东华大学纤维材料改性国家重点实验室, 上海201620）

收稿日期:2012-11-26 修回日期:2013-02-24 出版日期:2013-09-20 网络出版日期:2013-08-14
作者简介:龚云(1987-), 女, 博士研究生. E-mail:gongyun1027@gmail.com
基金资助:
国家重大科技基础研究发展计划(973)(2013CB933200); 国家杰出青年科学基金(51225202); 国家自然科学青年基金(51202278)

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)

摘要/Abstract

摘要： 以介孔结构的复合ZrO₂-TiO₂为载体负载活性组分, 制备了具有高CO催化氧化活性的Pd/ZrO₂-TiO₂与PdCu/ZrO₂-TiO₂负载型催化剂。XRD、TEM研究结果表明: 活性组分Pd、Cu物种可均匀分散于介孔载体中。系统考察了不同的催化剂载体、制备方法和助催化剂等对该介孔复合材料CO催化氧化性能的影响, 结果表明: 以ZrO₂-TiO₂为载体的催化剂其CO催化氧化活性明显优于以介孔Al₂O₃或介孔SBA-15为载体的催化剂; 一步法制备的介孔Pd/ZrO₂-TiO₂催化剂其CO催化氧化的低温活性较浸渍法制备的Pd/ZrO₂-TiO₂有很大提高; 并且Pd和Cu物种共负载的介孔ZrO₂-TiO₂复合催化剂具有最优的CO催化氧化活性, 其CO的完全催化氧化温度可降至170℃, O₂-TPD分析说明Pd和Cu之间的相互作用使得PdCu/ZT催化剂在更低温度具有氧化还原活性。

关键词: Pd催化剂, ZrO₂-TiO₂, CO氧化, 介孔结构

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

中图分类号:

TQ174

龚云, 陈航榕, 崔香枝, 江莞, 施剑林. Pd负载型介孔ZrO₂-TiO₂复合材料的设计合成及其CO催化氧化性能研究[J]. 无机材料学报, 2013, 28(9): 992-996.

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.

参考文献

[1] Prasad R, Singh P. A review on CO oxidation over copper chromite catalyst. Catal. Rev., 2012, 54(2): 224-279.

[2] Yang De-qiang, Zhou Qing-hua. Research progress of low-temperature CO oxidation catalysts. Chemical Engineer, 2011, 191(8): 36-38.

[3] Ertl G. Reactions at surfaces: from atoms to complexity (Nobel lecture). Angew. Chem. Int. Ed., 2008, 47(19): 3524-3535.

[4] Slavinskaya E M, Stonkus O A, Gulyaev R V, et al. Structural and chemical states of palladium in Pd/Al2O3 catalysts under self-sustained oscillations in reaction of CO oxidation. Appl. Catal. A-Gen., 2011, 401(12): 83-97.

[5] Jin M S, Park J N, Shon J K, et al. Low temperature CO oxidation over Pd catalysts supported on highly ordered mesoporous metal oxides. Catal. Today, 2012, 185(1): 183-190.

[6] Zorn K, Giorgio S, Halwax E, et al. CO oxidation on technological Pd-Al2O3 Catalysts: oxidation state and activity. J. Phys. Chem. C, 2011, 115(4): 1103-1111.

[7] Wang H, Liu C J. Preparation and characterization of SBA-15 supported Pd catalyst for CO oxidation. Appl. Catal. B-Environ., 2011, 106(3/4): 672-680.

[8] Ivanova A S, Slavinskaya E M, Gulyaev R V, et al. Metal-support interactions in Pt/Al2O3 and Pd/Al2O3 catalysts for CO oxidation. Appl. Catal. B-Environ., 2010, 97(1/2): 57-71.

[9] Mao Dongsen, Lu Guanzhong, Chen Qingling. Preparation and physico-chemical properties of titanium-zirconium mixed oxide and its application as a catalyst support. Chinese J. Catal., 2004, 25(6): 501-510.

[10] Schubert M M, Hackenberg S, Veen A C, et al. CO oxidation over supported gold catalysts-"inert" and "active" support materials and their role for the oxygen supply during reaction. J. Catal., 2001, 197(1): 113-122.

[11] Tu C H, Wang A Q, Zheng M Y, et al. Factors influencing the catalytic activity of SBA-15-supported copper nanoparticles in CO oxidation. Appl. Catal. A-Gen., 2006, 297(1): 40-47.

[12] Guo Y, Lu G, Zhang Z, et al. Effects of ZrO2/Al2O3 properties on the catalytic activity of Pd catalysts for methane combustion and CO oxidation. Catal. Today, 2007, 126(3/4): 441-448.

[13] Dyakonov A J. Abatement of CO from relatively simple and complex mixtures - II. Oxidation on Pd-Cu/C catalysts. Appl. Catal. B-Environ., 2003, 45(4): 257-267.

[14] Park E D, Choi S H, Lee J S. Active states of Pd and Cu in carbon-supported Wacker-type catalysts for low-temperature CO oxidation. J. Phys. Chem. B, 2000, 104(23): 5586-5594.

[15] Wang F, Lu G X. Hydrogen feed gas purification over bimetallic Cu-Pd catalysts - effects of copper precursors on CO oxidation. Int. J. Hydrogen Energy, 2010, 35(13): 7253-7260.

[16] Xu Z Y, Chen L Q, Shao Y, et al. Catalytic hydrogenation of aqueous nitrate over Pd-Cu/ZrO2 catalysts. Ind. Eng. Chem. Res., 2009, 48(18): 8356-8363.

Pd负载型介孔ZrO₂-TiO₂复合材料的设计合成及其CO催化氧化性能研究

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

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