| Pd/Fe3O4-MCNT磁性催化剂的制备、表征及催化性能 |
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| 引用本文： | 徐玲,沈晓旭,肖强,钟依均,叶素芳,叶向荣,朱伟东. Pd/Fe3O4-MCNT磁性催化剂的制备、表征及催化性能[J]. 物理化学学报, 2011, 27(8): 1956-1960. DOI: 10.3866/PKU.WHXB20110721 |
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| 作者姓名： | 徐玲 沈晓旭 肖强 钟依均 叶素芳 叶向荣 朱伟东 |
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| 作者单位： | 1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang Province, P. R. China;2. Jinhua College of Vocation and Technology, Jinhua 321007, Zhejiang Province, P. R. China;3. Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA |
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| 基金项目： | 浙江省自然科学基金(Y4100295); 浙江省高校重大科技攻关项目(ZD2007002); 浙江省新苗人才计划项目(2009R404014)资助~~ |
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| 摘 要： | 利用多元醇法制备了单分散Fe3O4纳米粒子修饰多壁碳纳米管(MCNT)的磁性复合材料, 并以X射线衍射(XRD)、透射电镜(TEM)和X射线能量色散谱(EDS)对碳纳米管磁性复合材料的结构和组成进行了表征. 研究发现, 通过调控Fe3O4前驱体与MCNT载体的质量比, 可以很好地控制沉积的磁性纳米粒子大小. 以碳纳米管磁性复合材料为载体, 采用多元醇法成功制备了Pd负载量为3.0% (w)的Pd/Fe3O4-MCNT磁性催化剂. 磁性质测试表明碳纳米管磁性复合材料在负载Pd前后都具有良好的超顺磁性. 以肉桂醛加氢为探针反应研究了Pd/Fe3O4-MCNT的催化性能, 结果表明该催化剂表现出良好的催化加氢性能, 在外加磁场下催化剂能与液相反应体系高效分离, 循环使用4次后, 催化性能没有明显下降, 显示了良好的循环利用性能.
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| 关 键 词： | 多壁碳纳米管 磁性复合催化剂 多元醇法 肉桂醛 选择性加氢 |
| 收稿时间： | 2011-02-25 |
| 修稿时间： | 2011-05-26 |
Preparation,Characterization and Catalytic Properties of Pd/Fe_3O_4-MCNT Magnetically Recyclable Catalysts |
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| XU Ling,SHEN Xiao-Xu,XIAO Qiang,ZHONG Yi-Jun,YE Su-Fang,YE Xiang-Rong,ZHU Wei-Dong. Preparation,Characterization and Catalytic Properties of Pd/Fe_3O_4-MCNT Magnetically Recyclable Catalysts[J]. Acta Physico-Chimica Sinica, 2011, 27(8): 1956-1960. DOI: 10.3866/PKU.WHXB20110721 |
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| Authors: | XU Ling SHEN Xiao-Xu XIAO Qiang ZHONG Yi-Jun YE Su-Fang YE Xiang-Rong ZHU Wei-Dong |
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| Affiliation: | 1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang Province, P. R. China;2. Jinhua College of Vocation and Technology, Jinhua 321007, Zhejiang Province, P. R. China;3. Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA |
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| Abstract: | A magnetic composite of multi-walled carbon nanotubes(MCNT) decorated with mono-dispersed Fe3O4 nanoparticles was prepared by a polyol method.The structure and composition of the resultant composite were characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM) and energy dispersive spectroscopy(EDS) techniques.We found that the size of the Fe3O4 nanoparticles supported on the MCNT could be easily controlled by changing the mass ratio of the Fe3O4 precursor to the MCNT.By a subsequent po... |
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| Keywords: | Multi-walled carbon nanotubes Magnetic composite catalyst Polyol method Cinnamaldehyde Selective hydrogenation |
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