负载型Mn-Fe/γ-Al2O3低温脱硝催化剂的性能

doi:10.16085/j.issn.1000-6613.2016.04.022

化工进展 ›› 2016, Vol. 35 ›› Issue (04): 1107-1112.DOI: 10.16085/j.issn.1000-6613.2016.04.022

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. 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

收稿日期:2015-07-13 修回日期:2015-10-09 出版日期:2016-04-05 发布日期:2016-04-05
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.

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

CHEN Huanzhang^1,2, LI Hong¹, LI Hua¹

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

摘要/Abstract

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

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

中图分类号:

X511

陈焕章, 李宏, 李花. 负载型Mn-Fe/γ-Al₂O₃低温脱硝催化剂的性能[J]. 化工进展, 2016, 35(04): 1107-1112.

CHEN Huanzhang, LI Hong, LI Hua. Denitration performance of supported Mn-Fe/γ-Al₂O₃ catalyst at low temperature[J]. Chemical Industry and Engineering Progree, 2016, 35(04): 1107-1112.

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负载型Mn-Fe/γ-Al₂O₃低温脱硝催化剂的性能

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

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