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首页> 外文期刊>Environmental Technology >Effect of ultrasonic treatment of palygorskite on the catalytic performance of Pd-Cu/palygorskite catalyst for room temperature CO oxidation in humid circumstances
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Effect of ultrasonic treatment of palygorskite on the catalytic performance of Pd-Cu/palygorskite catalyst for room temperature CO oxidation in humid circumstances

机译：凹凸棒石超声处理对湿润条件下常温CO氧化Pd-Cu /凹凸棒石催化剂催化性能的影响

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摘要

Pd-Cu/palygorskite catalysts were prepared by a wet impregnation method using palygorskite (PC/N-Pal) and ultrasonic-treated palygorskite (PC/U-Pal) as the support. Their catalytic activities toward CO oxidation at room temperature and in humid circumstances were investigated. PC/U-Pal exhibits much higher catalytic activity and stability than PC/N-Pal under the conditions of 1.0 vol.% CO and 3.3 vol.% H2O in the feed gas. The X-ray diffraction results indicate that quartz impurities were eliminated from the Pal after the ultrasonic treatment, and more copper species exist in the form of Cu2Cl(OH)(3) in PC/U-Pal. The temperature-programmed reduction results suggest that there is an enhanced reducibility of PC/U-Pal after ultrasonic treatment. Furthermore, the ultrasonic treatment can properly decrease the hydrophilicity of the support and catalyst, which may also contribute to the excellent catalytic performance.
机译：Pd-Cu /坡缕石催化剂是通过湿浸渍法制备的，使用坡缕石（PC / N-Pal）和超声处理坡缕石（PC / U-Pal）作为载体。研究了它们在室温和潮湿条件下对CO氧化的催化活性。在进料气中1.0％（体积）的CO和3.3％（体积）的H2O的条件下，PC / U-Pal的催化活性和稳定性比PC / N-Pal高。 X射线衍射结果表明，超声处理后，Pal中的石英杂质被清除，PC / U-Pal中以Cu2Cl（OH）（3）的形式存在更多的铜。程序升温还原结果表明，超声处理后PC / U-Pal的还原性增强。此外，超声处理可适当降低载体和催化剂的亲水性，这也可有助于优异的催化性能。

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  • 来源
    《Environmental Technology》 |2018年第8期|780-786|共7页
  • 作者

    Wang Yongzhao; Wang Yongning; Li Xiao; Liu Zhaotie; Zhao Yongxiang;

  • 作者单位

    Shanxi Univ, Engn Res Ctr, Sch Chem & Chem Engn, Minist Educ Fine Chem, Taiyuan 030006, Shanxi, Peoples R China;

    Shanxi Univ, Engn Res Ctr, Sch Chem & Chem Engn, Minist Educ Fine Chem, Taiyuan 030006, Shanxi, Peoples R China;

    Shanxi Univ, Engn Res Ctr, Sch Chem & Chem Engn, Minist Educ Fine Chem, Taiyuan 030006, Shanxi, Peoples R China;

    Shaanxi Normal Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian, Shaanxi, Peoples R China;

    Shanxi Univ, Engn Res Ctr, Sch Chem & Chem Engn, Minist Educ Fine Chem, Taiyuan 030006, Shanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Pd-Cu; palygorskite; ultrasonic treatment; hydrophilicity; room temperature CO oxidation; humid circumstances;

    机译：钯铜;凹凸棒石;超声处理;亲水性;室温CO氧化;潮湿环境;

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