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钾盐沉积V2O5-WO3/TiO2催化剂的制备及再生

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董文华, 黄华存, 周惠, 崔晶. 钾盐沉积V2O5-WO3/TiO2催化剂的制备及再生[J]. 环境化学, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
引用本文: 董文华, 黄华存, 周惠, 崔晶. 钾盐沉积V2O5-WO3/TiO2催化剂的制备及再生[J]. 环境化学, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
shu
DONG Wenhua, HUANG Huacun, ZHOU Hui, CUI Jing. Preparation and regeneration of V2O5-WO3/TiO2 catalyst with potassium salt deposition[J]. Environmental Chemistry, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
Citation: DONG Wenhua, HUANG Huacun, ZHOU Hui, CUI Jing. Preparation and regeneration of V2O5-WO3/TiO2 catalyst with potassium salt deposition[J]. Environmental Chemistry, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
shu

钾盐沉积V2O5-WO3/TiO2催化剂的制备及再生

  • 1.

    广西大学环境学院, 南宁, 530004;

  • 2.

    广西大学环境保护重点实验室, 南宁, 530004

  • 基金项目:

    广西高校环境保护重点实验室项目[桂教科研（2015）5号]资助.

Preparation and regeneration of V2O5-WO3/TiO2 catalyst with potassium salt deposition

  • 1.

    College of the Environment, Guangxi University, Nanning, 530004, China;

  • 2.

    Guangxi University Key laboratory of Environmental Protection, Nanning, 530004, China

  • Fund Project: Supported by Guangxi Colleges and Universities Key Laboratory of Environmental Protection[Guangxi Scientific Research (2015)5].

  • 摘要: 采用浸渍法制备钾盐沉积V2O5-WO3/TiO2催化剂，利用BET、FESEM、XRD和激光拉曼对催化剂进行表征.通过分析催化剂活性与理化性质，来考察钾盐沉积对V2O5-WO3/TiO2 SCR催化剂脱硝活性的影响.考察了中毒前后、不同的再生方法和测试时间对氨气选择性催化还原NO的影响.结果表明，钾盐沉积的V2O5-WO3/TiO2催化剂随着钾盐溶液浓度的增加中毒能力越强.不同的再生方法使得钾盐沉积V2O5-WO3/TiO2催化剂的脱硝活性均有不同程度的提高.整体来说，水洗酸洗加钒的再生催化剂脱硝效率可以恢复到98%、99%左右.
    Abstract: Potassion salts deposited V2O5-WO3/TiO2 catalysts were prepared by impregnation, and the obtained catalysts were characterized by BET, FESEM, XRD and Raman spectroscopy. The effect of K deposition on the performances of V2O5-WO3/TiO2 catalyst for the selective catalytic reduction of NO by NH3 was investigated. The effects of poisoning, regeneration method and test time on SCR of NO with ammonia were investigated. The results showed that the poisoning effect of the V2O5-WO3/TiO2 catalyst by K deposition increased with the potassium concentration. The denitration activity of K depositioned V2O5-WO3/TiO2 catalysts improved to different degrees by different regeneration methods. On the whole, denitration efficiency of the regenerated catalysts by water wash, acid wash and vanadium addition could reach 98% and 99%.
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  • 收稿日期:  2017-04-04
  • 刊出日期:  2018-05-15
董文华, 黄华存, 周惠, 崔晶. 钾盐沉积V2O5-WO3/TiO2催化剂的制备及再生[J]. 环境化学, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
引用本文: 董文华, 黄华存, 周惠, 崔晶. 钾盐沉积V2O5-WO3/TiO2催化剂的制备及再生[J]. 环境化学, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
shu
DONG Wenhua, HUANG Huacun, ZHOU Hui, CUI Jing. Preparation and regeneration of V2O5-WO3/TiO2 catalyst with potassium salt deposition[J]. Environmental Chemistry, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
Citation: DONG Wenhua, HUANG Huacun, ZHOU Hui, CUI Jing. Preparation and regeneration of V2O5-WO3/TiO2 catalyst with potassium salt deposition[J]. Environmental Chemistry, 2018, 37(5): 1110-1117. doi: 10.7524/j.issn.0254-6108.2017040401
shu

钾盐沉积V2O5-WO3/TiO2催化剂的制备及再生

  • 1.  广西大学环境学院, 南宁, 530004;
  • 2.  广西大学环境保护重点实验室, 南宁, 530004
  • 收稿日期:  2017-04-04
基金项目:

广西高校环境保护重点实验室项目[桂教科研（2015）5号]资助.

摘要: 采用浸渍法制备钾盐沉积V2O5-WO3/TiO2催化剂，利用BET、FESEM、XRD和激光拉曼对催化剂进行表征.通过分析催化剂活性与理化性质，来考察钾盐沉积对V2O5-WO3/TiO2 SCR催化剂脱硝活性的影响.考察了中毒前后、不同的再生方法和测试时间对氨气选择性催化还原NO的影响.结果表明，钾盐沉积的V2O5-WO3/TiO2催化剂随着钾盐溶液浓度的增加中毒能力越强.不同的再生方法使得钾盐沉积V2O5-WO3/TiO2催化剂的脱硝活性均有不同程度的提高.整体来说，水洗酸洗加钒的再生催化剂脱硝效率可以恢复到98%、99%左右.

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