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首页> 外文期刊>Applied Surface Science >The promotional effect of H_2 reduction treatment on the low-temperature NH_3-SCR activity of Cu/SAPO-18
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The promotional effect of H_2 reduction treatment on the low-temperature NH_3-SCR activity of Cu/SAPO-18

机译：H_2还原处理对Cu / Sapo-18的低温NH_3-SCR活性的推进作用

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摘要

In this study, a Cu/SAPO-18 catalyst was treated by H-2 reduction, which induced a remarkable enhancement of the low-temperature NH3-SCR activity. Compared with the fresh catalyst, the reduced Cu/SAPO-18 catalyst showed an increase in NOx conversion from 45% to 80% at 175 degrees C, and from 80% to 100% at 200 degrees C, under a GHSV of 200,000 h(-1). The characterization (XRD, XPS and H-2-TPR) and in-situ DRIFTS results confirmed that a large amount of Cu cations (most of which were Cu+ ions) existed on/in Cu/SAPO-18 after the H-2 reduction treatment. The increased Cu+/Cu2+ ratio led to the enhanced low-temperature SCR activity.
机译：在该研究中，通过H-2还原处理Cu / SAPO-18催化剂，其诱导了低温NH3-SCR活性的显着提高。 与新鲜催化剂相比，还原的Cu / Sapo-18催化剂在175℃下的45％至80％的NOx转化率增加，在200,000小时的GHSV下为80％至100％（ -1）。 表征（XRD，XPS和H-2-TPR）和原位漂移结果证实，在H-2还原后，Cu / SAPO-18中存在大量的Cu阳离子（其中大部分是Cu +离子） 治疗。 增加的Cu + / Cu2 +比率导致增强的低温SCR活动。

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  • 来源
    《Applied Surface Science》 |2019年第31期|536-544|共9页
  • 作者

    Zhu Na; Lian Zhihua; Zhang Yan; Shan Wenpo; He Hong;

  • 作者单位

    Chinese Acad Sci Inst Urban Environm Ctr Excellence Reg Atmospher Environm Xiamen 361021 Fujian Peoples R China|Chinese Acad Sci Inst Urban Environm Key Lab Urban Pollutant Convers Xiamen 361021 Fujian Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Urban Environm Ctr Excellence Reg Atmospher Environm Xiamen 361021 Fujian Peoples R China|Chinese Acad Sci Inst Urban Environm Key Lab Urban Pollutant Convers Xiamen 361021 Fujian Peoples R China;

    Chinese Acad Sci Inst Urban Environm Ctr Excellence Reg Atmospher Environm Xiamen 361021 Fujian Peoples R China|Chinese Acad Sci Inst Urban Environm Key Lab Urban Pollutant Convers Xiamen 361021 Fujian Peoples R China|Chinese Acad Sci Inst Urban Environm NUEORS Ningbo 315800 Zhejiang Peoples R China;

    Chinese Acad Sci Inst Urban Environm Ctr Excellence Reg Atmospher Environm Xiamen 361021 Fujian Peoples R China|Chinese Acad Sci Inst Urban Environm Key Lab Urban Pollutant Convers Xiamen 361021 Fujian Peoples R China|Chinese Acad Sci Inst Urban Environm NUEORS Ningbo 315800 Zhejiang Peoples R China;

    Chinese Acad Sci Inst Urban Environm Ctr Excellence Reg Atmospher Environm Xiamen 361021 Fujian Peoples R China|Chinese Acad Sci Inst Urban Environm Key Lab Urban Pollutant Convers Xiamen 361021 Fujian Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China|Chinese Acad Sci Inst Urban Environm NUEORS Ningbo 315800 Zhejiang Peoples R China|Chinese Acad Sci Res Ctr Ecoenvironm Sci State Key Joint Lab Environm Simulat & Pollut Con Beijing 100085 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Cu/SAPO-18; H-2 reduction treatment; Low-temperature activity; Selective catalytic reduction; NOx abatement;

    机译：Cu / Sapo-18;H-2还原处理;低温活性;选择性催化还原;NOx削减;

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