钛白粉掺杂蒙脱土蜂窝式脱硝催化剂的制备及催化性能

›› 2018, Vol. 49 ›› Issue (7): 50-53.

钛白粉掺杂蒙脱土蜂窝式脱硝催化剂的制备及催化性能

张涛

江苏龙净科杰催化剂再生有限公司

收稿日期:2017-11-09 修回日期:2017-11-30 出版日期:2018-07-12 发布日期:2018-07-26
通讯作者: 张涛 E-mail:zhangtao@lk-cl.com

PREPARATION AND CATALYTIC PROPERTIES OF TiO2 HONEYCOMB DENITRATION CATALYST MIXED WITH MONTMORILLONITE

Received:2017-11-09 Revised:2017-11-30 Online:2018-07-12 Published:2018-07-26

摘要/Abstract

摘要： 以钛白粉掺杂蒙脱土为载体，偏钒酸铵和偏钨酸铵为活性组分前躯体，充分捏合后用挤出机挤压成型制备蜂窝式脱硝催化剂，通过XRD，BET，SEM手段对催化剂结构进行表征，并对催化剂的脱硝效率进行评价。结果表明：催化剂晶相结构为锐钛矿TiO2，未观察到蒙脱土特征衍射峰，与钛白粉表现出良好的相容性；催化剂的比表面积、孔体积随着蒙脱土量的增加而增加；当掺杂蒙脱土量为10%时，得到的催化剂脱硝效率达到95.8%，且催化剂具有良好的机械强度和磨损强度。

关键词: 蒙脱土, 钛白粉, 脱硝催化剂, 成型, 脱硝性能

Abstract: A honeycomb type denitration catalyst was prepared by titanium dioxide mixed with montmorillonite, ammonium vanadate and ammonium tungstate solutions and was characterized by XRD, BET and SEM, and the denitration activity evaluation. The results showed that the phase structure of the catalyst is anatase TiO2, and the diffraction peak of montmorillonite is not observed, indicating the good compatibility with titanium dioxide. The specific surface area and pore volume of the catalyst increase with the increase of the amount of montmorillonite. When the amount of doped montmorillonite is 10%, the denitration rate of the catalyst is up to 95.8%. The catalysts have good mechanical and wear strength.

Key words: Montmorillonite, Titanium dioxide, denitration catalyst, molding, denitration performance

张涛. 钛白粉掺杂蒙脱土蜂窝式脱硝催化剂的制备及催化性能[J]. , 2018, 49(7): 50-53.

参考文献

[1]陈进生.火电厂烟气脱硝技术选择性催化还原法[M].北京：中国电力出版社，2008 [2]张强.燃煤电站SCR烟气脱硝技术及工程应用[M].北京：化学工业出版社，2007 [3]孙克勤，钟秦。火电厂烟气脱硝技术及工程应用[M].北京：化学工业出版社，2007 [4]Zhang Y, Huang W, London S J, et al.ozone and daily mortality in Shanghai, China[J].Environmental health perspectives, 2006, 114(8):1227-1232 [5]Chen B, Hong C, Kan H.Exposures and health outcomes form outdoor air pollutants in China[J].Toxicology, 2004, 198(1):291-300 [6]Zhou W, Yuan D, Ye S, Qi P, et al.Health effects of occupational exposures to vehicle emissions in Shanghai[J].International Journal of Occupational and Environmental Health, 2001, 7(1):23-30 [7]朱林，吴碧君，段玖祥等.烟气脱硝催化剂生产与应用现状[J].中国电力, 2009, 42(8):61-64 [8]Herrmann J-M, Disdier J.Electrical properties of V2O5-WO3TiO2 EUROCAT catalysts evidence for redox process in selective catalytic reduction(SCR) deNOx reaction[J].catalysis Today, 2000, 56(4):389-401 [9]Busca G, Lietti L, Ramis G, Berti F.Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts:A review[J].Applied Catalysis B:Environmental, 1998, 18(1):1-36 [10]Bueno-López A, Lozano-Castelló D, Such-Basá?ez I, et al.Preparation of beta-coated cordierite honeycomb monoliths by in situ synthesis: Utilisation as Pt support for NOx abatement in diesel exhaust[J].Applied Catalysis B: Environmental, 2005, 58(1-2):1-7 [11]Lucjan Chmielarz, Zofia Piwowarska, Piotr Ku?trowski, et al.Comparison study of titania pillared interlayered clays and porous clay heterostructures modified with copper and iron as catalysts of the DeNOx process[J].Applied clay science, 2011, 53(2):164-173 [12]Khalfallah Boudali L, Ghorbel A, Grange P, et al.Selective catalytic reduction of NO with ammonia over V2O5 supported sulfated titanium-pillared clay catalysts: influence of V2O5 content[J].Applied Catalysis B: Environmental, 2005, 59(1-2):105-111 [13]Shen Boxiong, Ma Hongqing, He Chuan, et al.Low temperature NH3–SCR over Zr and Ce pillared clay based catalysts[J].Fuel Processing Technology, 2014, 119(3):121-129 [14]张涛，赵振波等.钛交联蒙脱石纳米复合材料制备及应用进展[J].化工科技, 2008, 16(1):46-51