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首页> 外文期刊>Environmental Science & Technology >Outstanding Resistance of H_2S-Modified Cu/TiO_2 to SO_2 for Capturing Gaseous Hg° from Nonferrous Metal Smelting Flue Gas: Performance and Reaction Mechanism
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Outstanding Resistance of H_2S-Modified Cu/TiO_2 to SO_2 for Capturing Gaseous Hg° from Nonferrous Metal Smelting Flue Gas: Performance and Reaction Mechanism

机译：H_2S改性Cu / TiO_2对SO_2捕获有色金属冶炼烟气中气态Hg°的优异抗性：性能和反应机理。

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摘要

The utilization of H2SO4, produced using SO2 from nonferrous metal smelting flue gas as a source of S, is extremely restricted due to Hg contamination; therefore, there is great demand to remove He from smelting flue gas. Although the ability of Cu/TiO2 to capture He is excellent, its resistance to H2O and SO2 is very poor. In this study, Cu/TiO2 was treated with H2S to improve its resistance to H2O and SO2 for capturing He. The chemical adsorption of He on Cu/TiO2 was primarily through the HgO route, which was almost suppressed by H2O and SO2 due to the transformation of CuO into CuSO4. Besides the HgO route, the HgS route also contributed to the chemical adsorption of He on modified Cu/TiO2. As the CuS on modified Cu/TiO2 was inert to H2O and SO2, the chemical adsorption of He on modified Cu/TiO, through the HgS route was barely inhibited. Meanwhile, the HgS route was predominant in the chemical adsorption of He on modified Cu/TiO2. Therefore, modified Cu/TiO2 exhibited an excellent resistance to H2O and SO2, and its He capture capacity from simulated flue gas was up to 12.7 mg g(-1) at 100 degrees C.
机译：由于汞污染，使用有色金属冶炼烟气中的SO2产生的H2SO4的利用受到极大限制。因此，强烈要求从冶炼烟气中去除He。尽管Cu / TiO2捕获He的能力很强，但其对H2O和SO2的抵抗力却很差。在这项研究中，Cu / TiO2用H2S处理，以提高其对H2O和SO2的捕获He的抵抗力。 He在Cu / TiO2上的化学吸附主要是通过HgO途径，由于CuO转化为CuSO4，几乎被H2O和SO2抑制。除HgO途径外，HgS途径还有助于He在改性Cu / TiO2上的化学吸附。由于改性Cu / TiO2上的CuS对H2O和SO2呈惰性，因此几乎不抑制He通过HgS途径对He在改性Cu / TiO2上的化学吸附。同时，HgS途径主要是He在修饰的Cu / TiO2上的化学吸附。因此，改性的Cu / TiO2对H2O和SO2表现出优异的抵抗力，并且在100摄氏度下其从模拟烟道气中的He捕获能力高达12.7 mg g（-1）。

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  • 来源
    《Environmental Science & Technology》 |2018年第17期|10003-10010|共8页
  • 作者

    Kong Lingnan; Zou Sijie; Mei Jian; Geng Yang; Zhao Hui; Yang Shijian;

  • 作者单位

    Jiangnan Univ, Sch Environm & Civil Engn, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Peoples R China;

    Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Jiangsu Key Lab Chem Pollut Control & Resources R, Nanjing 210094, Jiangsu, Peoples R China;

    Jiangnan Univ, Sch Environm & Civil Engn, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Peoples R China;

    Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Jiangsu Key Lab Chem Pollut Control & Resources R, Nanjing 210094, Jiangsu, Peoples R China;

    Jiangnan Univ, Sch Environm & Civil Engn, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Peoples R China;

    Jiangnan Univ, Sch Environm & Civil Engn, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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