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首页> 外文期刊>Energy & fuels >CePO4 Catalyst for Elemental Mercury Removal in Simulated Coal-Fired Flue Gas
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CePO4 Catalyst for Elemental Mercury Removal in Simulated Coal-Fired Flue Gas

机译：CePO4催化剂用于模拟燃煤烟气中的元素脱除

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摘要

CePO4 catalyst (termed Ce-P-O) was for the first time employed to capture elemental mercury (Hg-0) under simulated coal-fired flue gas conditions. As compared with commercial SCR catalyst (i.e., V-W-Ti), the Ce-P-O catalyst showed a much better performance in Hg-0 removal. The high Hg-0 adsorption capacity, abundant active oxygen species, and excellent SO2 poisoning resistance account for the performance of the Ce-P-O catalyst. When the catalyst was subjected to individual flue gas component conditions, it was found that the presence of NO can significantly improve the Hg-0 removal efficiency over the Ce-P-O catalyst; however, HCl did not show promotion effect. It is proposed that the former occurs because the generated NO2 (originated from NO oxidation) could react with Hg-0 ad-species (e.g., Hg2O), regenerating the HgO and hence enhancing the Hg-0 chemisorption. The latter was found to be due to the absence of the Deacon reaction over the catalyst.
机译：CePO4催化剂（称为Ce-P-O）首次用于在模拟燃煤烟气条件下捕获元素汞（Hg-0）。与商用SCR催化剂（即V-W-Ti）相比，Ce-P-O催化剂在去除Hg-0方面表现出更好的性能。高Hg-0吸附能力，丰富的活性氧种类和出色的SO2抗中毒性是Ce-P-O催化剂的性能之所在。当将催化剂置于单独的烟道气条件下时，发现NO的存在可以比Ce-P-O催化剂显着提高Hg-0的去除效率。但是，HCl没有显示出促进作用。提出前者之所以发生是因为所产生的NO2（源自NO氧化）可能与Hg-0副物种（例如Hg2O）反应，使HgO再生并因此增强了Hg-0的化学吸附。发现后者是由于在催化剂上不存在迪肯反应。

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  • 来源
    《Energy & fuels》 |2015年第mayajuna期|3359-3365|共7页
  • 作者

    Weng Xiaole; Mei Rongjun; Shi Mengpa; Kong Qiyue; Liu Yue; Wu Zhongbiao;

  • 作者单位

    Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China|Zhejiang Prov Engn Res Ctr Ind Boiler & Furnace F, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China|Zhejiang Prov Engn Res Ctr Ind Boiler & Furnace F, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China|Zhejiang Prov Engn Res Ctr Ind Boiler & Furnace F, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China|Zhejiang Prov Engn Res Ctr Ind Boiler & Furnace F, Hangzhou 310058, Zhejiang, 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);
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