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首页> 外文期刊>International journal of green energy >Cu nanoparticles confined in TiO_2 nanotubes to enhance the water-gas shift reaction activity
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Cu nanoparticles confined in TiO_2 nanotubes to enhance the water-gas shift reaction activity

机译：Cu纳米颗粒限制在TiO_2纳米管中，以增强水气移反应活性

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摘要

It is of great significance to develop water-gas shift (WGS) catalyst with high catalytic activity in low-temperature operational regime. In this paper, we have prepared Cu confined in TiO2 nanotubes (TiO2NT, Cu-in-TiO2NT) catalyst via a vacuum-assisted impregnation method and subsequent calcination. The confined Cu-in-TiO2NT catalyst exhibits the higher CO conversion and H-2 production rate than that of the Cu loaded on TiO2NT catalyst throughout the entire reaction temperature range. At the reaction temperature of 250 degrees C and 300 degrees C, the CO conversion of the confined catalyst is twofold and fourfold, respectively, higher than that of the supported catalyst, demonstrating superior catalytic activity toward WGS reaction. Due to the confinement effect of TiO2NT, the confined Cu-in-TiO2NT catalyst can enhance the concentration of the oxygen vacancies for H2O activation, contributing to the higher WGS activity.
机译：在低温操作状态下开发具有高催化活性的水气移（WGS）催化剂具有重要意义。 在本文中，我们通过真空辅助浸渍方法和随后的煅烧制备Cu被限制在TiO2纳米管（TiO 2NT，Cu-In-TiO 2NT）催化剂中。 狭窄的Cu-In-TiO 2NT催化剂在整个反应温度范围内表现出比在TiO 2NT催化剂上的Cu上的Cu转化率和H-2产生率更高。 在250℃和300℃的反应温度下，孔催化剂的CO转化分别比负载型催化剂的CO转化为双重，致力于WGS反应的优异催化活性。 由于TiO2NT的限制效果，狭窄的Cu-In-TiO2NT催化剂可以增强H2O活化的氧空位的浓度，有助于更高的WGS活性。

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  • 来源
    《International journal of green energy》 |2021年第10期|595-601|共7页
  • 作者

    Chen Yaqian; Li Xiangnan; Li Juan; Wu Liangpeng; Li Xinjun;

  • 作者单位

    Chinese Acad Sci Guangzhou Inst Energy Convers CAS Key Lab Renewable Energy Guangdong Prov Key Lab New & Renewable Energy Res Guangzhou 510640 Peoples R China|Univ Chinese Acad Sci Coll Mat Sci & Optoelect Technol Beijing Peoples R China;

    Chinese Acad Sci Guangzhou Inst Energy Convers CAS Key Lab Renewable Energy Guangdong Prov Key Lab New & Renewable Energy Res Guangzhou 510640 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Energy Convers CAS Key Lab Renewable Energy Guangdong Prov Key Lab New & Renewable Energy Res Guangzhou 510640 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Energy Convers CAS Key Lab Renewable Energy Guangdong Prov Key Lab New & Renewable Energy Res Guangzhou 510640 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Energy Convers CAS Key Lab Renewable Energy Guangdong Prov Key Lab New & Renewable Energy Res Guangzhou 510640 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Confinement effect; TiO2 nanotubes; Cu; oxygen vacancies; water-gas shift;

    机译：限制效果;TiO2纳米管;Cu;氧气空位;水气移;

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