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山东大学学报（理学版） ›› 2017, Vol. 52 ›› Issue (5): 18-24.doi: 10.6040/j.issn.1671-9352.0.2016.577

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负载型钌基纳米结构用于挥发性有机化合物催化氧化的研究

潘金鼎1, 2,李佳琪1, 2,冯艳1,2,陈运法1,杨军1*   

  1. 1.中国科学院过程工程研究所多相复杂系统国家重点实验室, 北京 100190;2.中国科学院大学, 北京 100049
  • 收稿日期:2016-12-09 出版日期:2017-05-20 发布日期:2017-05-15
  • 通讯作者: 杨军(1972— ),男,博士,研究员,研究方向为金属、半导体及复合纳米材料、燃料电池、光催化、水处理和环境净化及分离技术. ;E-mail:jyang@ipe.ac.cn E-mail:jdpan@ipe.ac.cn
  • 作者简介:潘金鼎(1987— ),男,硕士研究生,研究方向为贵金属纳米材料的制备及其在有机挥发物催化氧化中的应用. E-mail:jdpan@ipe.ac.cn
  • 基金资助:
    国家自然科学基金资助项目(21376247,21573240);国家高技术研究发展计划(863计划)资助项目(2012AA062702);中国科学院先导专项资助项目(XDB05050300);中国科学院知识创新工程资助项目(KZCX2-EW-403)

Supported ruthenium-based nanostructures toward catalytic oxidation of volatile organic compounds

PANG Jin-ding1,2, LI Jia-qi1,2, FENG Yan1,2, CHEN Yun-fa1, YANG Jun1*   

  1. (1. State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-12-09 Online:2017-05-20 Published:2017-05-15

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摘要： 基于种子生长法并施加适当的后续处理,制备了负载于CeO2和γ-Al2O3载体表面的核壳结构Ag-Ru和中空Ru纳米颗粒。对苯催化氧化活性测试表明,核壳结构Ag-Ru纳米颗粒比中空Ru纳米颗粒具有更好的催化活性,其中负载于CeO2表面的核壳结构Ag-Ru纳米颗粒的T20和T90可分别低至153.8 ℃和170.4 ℃。XPS和H2-TPR分析均表明在核壳结构Ag-Ru纳米颗粒中,内核Ag的存在可增加壳层组分中金属态Ru的含量,并且可抑制颗粒与载体间的相互作用,可能是导致核壳结构纳米颗粒具有较好苯催化氧化活性的原因。

关键词: 钌纳米颗粒, 核壳结构, 中空结构, 苯, 催化氧化, 种子生长法

Abstract: CeO2 and γ-Al2O3-supported core-shell Ag-Ru and hollow Ru nanoparticles are prepared by a seed-mediated growth method and an appropriate post-treatment. The catalytic tests of benzene oxidation show that the core-shell Ag-Ru nanoparticles have better activities than those of hollow Ru nanostructures. In specific, the core-shell Ag-Ru nanoparticles supported on CeO2 substrates have T20 and T90 as low as 153.8 ℃ and 170.4 ℃, respectively. The XPS and H2-TPR analyses confirm that the core-shell Ag-Ru nanoparticles have more metallic Ru component in their particle surface, which may account for the high performance for oxidation of benzene.

Key words: Ru nanoparticles, benzene, catalytic oxidation, core-shell, seed-mediated growth, hollow

中图分类号: 

  • TQ426.6
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