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不同形貌MnO2及其负载Au催化剂的制备与CO和甲苯催化氧化性能研究

谭伟 袁震 蒋进元 程永前 戴洪兴

谭伟, 袁震, 蒋进元, 程永前, 戴洪兴. 不同形貌MnO2及其负载Au催化剂的制备与CO和甲苯催化氧化性能研究[J]. 环境工程技术学报, 2018, 8(2): 142-148. doi: 10.3969/j.issn.1674-991X.2018.02.019
引用本文: 谭伟, 袁震, 蒋进元, 程永前, 戴洪兴. 不同形貌MnO2及其负载Au催化剂的制备与CO和甲苯催化氧化性能研究[J]. 环境工程技术学报, 2018, 8(2): 142-148. doi: 10.3969/j.issn.1674-991X.2018.02.019
TAN Wei, YUAN Zhen, JIANG Jinyuan, CHENG Yongqian, DAI Hongxing. Preparation of different morphologies of Au/α-MnO2 catalyst for oxidation of carbon monoxide and toluene[J]. Journal of Environmental Engineering Technology, 2018, 8(2): 142-148. doi: 10.3969/j.issn.1674-991X.2018.02.019
Citation: TAN Wei, YUAN Zhen, JIANG Jinyuan, CHENG Yongqian, DAI Hongxing. Preparation of different morphologies of Au/α-MnO2 catalyst for oxidation of carbon monoxide and toluene[J]. Journal of Environmental Engineering Technology, 2018, 8(2): 142-148. doi: 10.3969/j.issn.1674-991X.2018.02.019

不同形貌MnO2及其负载Au催化剂的制备与CO和甲苯催化氧化性能研究

doi: 10.3969/j.issn.1674-991X.2018.02.019
详细信息
    作者简介:

    谭伟(1988—),男,助理工程师,硕士,主要从事环境科学与环境规划研究,weitan_2012@163.com

    通讯作者:

    蒋进元 E-mail: jiangjy@craes.org.cn

  • 中图分类号: X701.3

Preparation of different morphologies of Au/α-MnO2 catalyst for oxidation of carbon monoxide and toluene

More Information
    Corresponding author: Jinyuan JIANG E-mail: jiangjy@craes.org.cn
  • 摘要: 以高锰酸钾和(或)硫酸锰为锰源,分别采用水热法和PVA保护的硼氢化钠还原法,制备了一维纳米棒状、线状和管状xAu/MnO2(x为2%、4%、8%和10%)催化剂。一维棒状、线状和管状xAu/MnO2中的MnO2均为四方晶相α-MnO2,其α-MnO2样品的比表面积为48.4~114.0 m 2/g。棒状4%Au/α-MnO2的催化活性最好:在空速为20 000 mL/(g·h)的条件下,CO转化率达到50%和90%时的反应温度(T50%T90%)分别为11.4和16.3 ℃;氧化甲苯的T50%T90%分别为210和225 ℃。基于大量的表征结果和多组催化活性数据分析发现,棒状4%Au/α-MnO2催化剂催化活性最好的主要原因是其低温还原性能最好、吸附氧物种浓度较高、催化剂上的Au纳米粒子高度分散、Au纳米粒子与α-MnO2纳米棒之间有较强相互作用。

     

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出版历程
  • 收稿日期:  2017-09-18
  • 刊出日期:  2018-03-20

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