Catalytic Materials

Study on new preparation process and performance of V2O5 /(TiO2-SiO2) denitrification catalyst

  • Chunhui SUN ,
  • Yongsheng CHEN ,
  • Wei LIU ,
  • Yan XU ,
  • Jingcheng ZHANG ,
  • Ruixiang YU
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  • CenerTech Tianjin Chemical Research and Design Institute Co.,Ltd.,Tianjin 300131,China

Received date: 2021-05-17

  Online published: 2021-12-16

Abstract

The series V2O5/(TiO2-SiO2) SCR catalysts were prepared by dripping-glue-coating process that dripped the col-loidal solution into the parallel 7-channel of the self-made honeycomb support.The solution was formed by mixing ammonium vanadate(NH4VO3) and HPMC with high-speed stirring.The prepared denitrification catalyst was characterized by XRD、BET、H2-TPR and catalyst evaluation experiment.The influence of the distribution of V2O5 on support and V2O5 content on the SCR catalyst performance were investigated.The activity of denitration catalyst was also studied in several aspects: reaction temper-ature,reaction space velocity,n(NH3)/n(NO) molar ratio,etc.The results showed the content of the V2O5 of 1.2%,the space velocity of 10 000 h-1,the NH3/NO molar ratio of 1.2,the temperature of 320 ℃,the de-NOx efficiency of the catalyst was as high as 93.0%.Compared with the industrial SCR catalyst,the V2O5/(TiO2-SiO2) SCR catalyst has higher activity,lower con-sumption of vanadium,lower production cost,and less environmental pollution.

Cite this article

Chunhui SUN , Yongsheng CHEN , Wei LIU , Yan XU , Jingcheng ZHANG , Ruixiang YU . Study on new preparation process and performance of V2O5 /(TiO2-SiO2) denitrification catalyst[J]. Inorganic Chemicals Industry, 2021 , 53(12) : 146 -149 . DOI: 10.19964/j.issn.1006-4990.2021-0191

References

[1] 杜超. SCR脱硝催化剂发展现状与前景分析[J]. 中国石油和化工标准与质量, 2019, 39(22):119-120.
[2] GB 13223—2011 火电厂大气污染物排放标准[S].
[3] 赵春林, 梁海龙, 陈鑫, 等. 整体式V2O5-MoO3-CeOx /TiO2 /堇青石SCR脱硝催化剂的制备[J]. 稀有金属材料与工程, 2018(S1):222-225.
[4] 赵世强. 氨气还原氮化五氧化二钒制备V(N,O)粉体与机理研究[J]. 有色金属科学与工程, 2019, 10(5):28-34.
[5] 尹元根. 多相催化剂的研究方法[M]. 北京: 化学工业出版社, 1988.
[6] 马宗青, 扈伟强, 董智, 等. 一种氧化钇掺杂钨复合粉末的旋转式煅烧和还原方法:中国, 109894626A[P]. 2019-06-18.
[7] BOSCH H, KIP B J, OMMEN J G, et al. Factors influencing the tem- perature-programmed reduction profiles of vanadium pentoxide[J]. Journal of the Chemical Society,Faraday Transactions 1:Physical Chemistry in Condensed Phases, 1984, 80:2479-2488.
[8] 刘铭, 梁材, 梁文茂, 等. 含氧量和面速度变化对SCR脱硝催化剂性能影响的研究[J]. 中国环保产业, 2020(4):46-49.
[9] DAHL J K, BUECHLER K J, FINLEY R, et al. Rapid solar-thermal dissociation of natural gas in an aerosol flow reactor[J]. Energy, 2004, 29(5/6):715-725.
[10] LONG R Q, YANG R T. Selective catalytic reduction of NO with ammonia over V2O5 doped TiO2 pillared clay catalysts[J]. Applied Catalysis B:Environmental, 2000, 24:13-21.
[11] 孙辉. V2O5-WO3/TiO2催化剂表面元素价态与脱硝活性及机制的关系[D]. 哈尔滨:哈尔滨工程大学, 2017.
[12] 许波连, 范以宁, 刘浏, 等. V2O5/TiO2催化剂表面钒氧物种的分散状态和催化性能[J]. 中国科学:B辑, 2002, 32(3):235-242.
[13] BUSCA G, LIETTI L, RAMIS G, et al. Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts:A review[J]. Applied Catalysis B:Environment, 1998, 18:1-36.
[14] FORZATTI P. Present status and perspectives in de-NOx SCR ca- talysis[J]. Applied Catalysis A:General, 2001, 222(1/2):221-236.
[15] 李亚倩, 李建军, 李海娇. 低温NH3-SCR脱硝催化剂研究现状及进展[J]. 四川化工, 2018, 21(2):13-15,19.
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