Chemical Industry and Engineering Progree ›› 2016, Vol. 35 ›› Issue (04): 1107-1112.DOI: 10.16085/j.issn.1000-6613.2016.04.022

• Industrial catalysis • Previous Articles     Next Articles

Denitration performance of supported Mn-Fe/γ-Al2O3 catalyst at low temperature

CHEN Huanzhang1,2, LI Hong1, LI Hua1   

  1. 1. College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China;
    2. Hebei Key Laboratory of Molecular Chemistry for Drug, Shijiazhuang 050018, Hebei, China
  • Received:2015-07-13 Revised:2015-10-09 Online:2016-04-05 Published:2016-04-05

负载型Mn-Fe/γ-Al2O3低温脱硝催化剂的性能

陈焕章1,2, 李宏1, 李花1   

  1. 1. 河北科技大学化学与制药工程学院, 河北 石家庄 050018;
    2. 河北省药用分子化学重点实验室, 河北 石家庄 050018
  • 通讯作者: 陈焕章(1962-),男,教授,主要从事精细化学品开发和脱硝工艺研究.E-mail:chenhuanzhang@yeah.net.

Abstract: Low-temperature denitration catalyst Mn-Fe/γ-Al2O3 was prepared by the co-precipitation method. The performance of the catalysts for SCR reaction was evaluated with ammonia gas as the reductant in a fixed bed catalyst reactor. The effects of loading, active component ratio, calcination temperature, space velocity, oxygen content and mole ratio of NH3/NO on the catalysts' performance at low temperature were examined. The catalysts were characterized by XRD and BET techniques. The result showed that NO conversion over the catalyst could be above 96% at 200℃ when the conditions of the metal loading of 20%, molar ratio of Mn/Fe 4:1, space velocity of 16000h-1, oxygen content of 4%, and mole NH3/NO ratio of 1.2, were adopted.

Key words: preparation, catalyst, selective catalytic reduction, low temperature, reactivity

摘要: 采用共沉淀法制备了负载型Mn-Fe/γ-Al2O3低温SCR催化剂,运用固定床催化反应器,以氨气为还原剂,考察了负载量、活性组分配比、焙烧温度等制备条件和空速、O2体积分数、NH3/NO摩尔比等操作条件对Mn-Fe/γ-Al2O3催化剂低温脱硝性能的影响,并通过X射线衍射仪(XRD)、比表面积测定仪(BET)等手段对催化剂进行表征.结果表明,负载质量分数为20%、n(Mn):n(Fe)=4:1、焙烧温度为600℃、空速为16000h-1、O2体积分数为4%、NH3/NO摩尔比为1.2、反应温度为200℃的条件下,NO转化率达到了96%以上.

关键词: 制备, 催化剂, 选择性催化还原, 低温, 活性

CLC Number: 

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