无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
催化材料

Cr对工业V-Mo/Ti脱硝催化剂的毒化作用研究

  • 黄力 ,
  • 王虎 ,
  • 纵宇浩 ,
  • 常峥峰 ,
  • 刘洋 ,
  • 李金珂 ,
  • 韩沛
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  • 1.大唐南京环保科技有限责任公司,江苏南京 211111
    2.内蒙古科技大学分析测试中心
黄力(1986—),男,硕士,高级工程师,研究方向为烟气脱硝催化剂;E-mail: huangl@dteg.com.cn

收稿日期: 2020-10-11

  网络出版日期: 2021-08-11

基金资助

江苏省科技成果转化专项资金项目(BA2017095);江苏省博士后科研资助计划(2018K076C);中国博士后科学基金(2019M651632)

Study on deactivation effect of chromium on industrial V-Mo/Ti De-NOx catalyst

  • Li Huang ,
  • Hu Wang ,
  • Yuhao Zong ,
  • Zhengfeng Chang ,
  • Yang Liu ,
  • Jinke Li ,
  • Pei Han
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  • 1. Datang Nanjing Environmental Protection Technology Co.,Ltd,Nanjing 211111,China
    2. Instrumental Analysis Center,Inner Mongolia University of Science & Technology

Received date: 2020-10-11

  Online published: 2021-08-11

摘要

采用浸渍法将不同含量的Cr2O3负载在工业V-Mo/Ti脱硝催化剂上,并通过XRD、NH3-TPD、H2-TPR、XPS、N2-吸附脱附、拉曼光谱等手段对催化剂进行表征分析。使用固定床微型反应评价装置对不同催化剂进行了脱硝性能检测。结果表明:工业V-Mo/Ti脱硝催化剂上负载Cr2O3,对催化剂的孔结构影响较小;V-Mo-Cr/Ti催化剂与V-Mo/Ti催化剂相比具备更多的表面酸量。但由于受Cr2O3的影响,催化剂的还原性能较低,化学吸附氧含量较少。与V-Mo/Ti催化剂相比,V-Mo-Cr/Ti催化剂在250~430 ℃温度区间内的脱硝效率较低,N2O生成量较多。

关键词: SCR; V-Mo/Ti; Cr2O3; 脱硝催化剂

本文引用格式

黄力 , 王虎 , 纵宇浩 , 常峥峰 , 刘洋 , 李金珂 , 韩沛 . Cr对工业V-Mo/Ti脱硝催化剂的毒化作用研究[J]. 无机盐工业, 2021 , 53(8) : 112 -116 . DOI: 10.19964/j.issn.1006-4990.2020-0543

Abstract

Industrial V-Mo-Cr/Ti catalysts loaded with different amounts of Cr2O3 were prepared by impregnation method.XRD,N2-adsorption,NH3-TPD,Raman,H2-TPR and XPS were used to characterize the catalysts.Afterwards,the denitri-fication performance of the different catalysts was tested through a fixed-bed microreactor.It was found that Cr2O3 loaded on industrial V-Mo/Ti denitration catalysts had little impact on the pore properties of catalyst.By comparison with V-Mo/Ti cat-alyst,V-Mo-Cr/Ti catalyst presented more amount of acid sites.However,due to the influence of Cr2O3,the reduction perfor-mance of the catalyst was lower and the content of chemical adsorbed oxygen was less.V-Mo-Cr/Ti catalysts exhibited relative lower NOx conversion and higher N2O generation in the temperature range of 250 ℃ to 430 ℃ than that of the V-Mo/Ti cata-lyst.

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