碱金属化合物对V2O5/AC催化剂低温脱硝的影响

doi:10.3969/j.issn.0438-1157.2013.08.024

化工学报 ›› 2013, Vol. 64 ›› Issue (8): 2867-2874.DOI: 10.3969/j.issn.0438-1157.2013.08.024

• 催化、动力学与反应器 • 上一篇下一篇

碱金属化合物对V₂O₅/AC催化剂低温脱硝的影响

韩斌, 雷志刚, 刘茜, 陈标华

北京化工大学化工资源有效利用国家重点实验室, 北京 100029

收稿日期:2012-12-11 修回日期:2013-05-10 出版日期:2013-08-05 发布日期:2013-08-05
通讯作者: 雷志刚
作者简介:韩斌(1986- ),男,硕士研究生。
基金资助:
国家自然科学基金项目(21121064,21076008)。

Influence of alkali metal compound on low-temperature NH₃-SCR of NO over V₂O₅/AC catalyst

HAN Bin, LEI Zhigang, LIU Xi, CHEN Biaohua

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2012-12-11 Revised:2013-05-10 Online:2013-08-05 Published:2013-08-05
Supported by:
supported by the National Natural Science Foundation of China(21121064,21076008).

摘要/Abstract

摘要： 研究了碱金属化合物(K₂SO₄)对活性炭(AC)担载五氧化二钒(V₂O₅)组成的V₂O₅/AC催化剂的低温脱硝活性的影响。发现在V₂O₅/AC催化剂表面负载碱金属化合物(K₂SO₄)后其脱硝活性大大降低。用等体积浸渍法制备了V₂O₅/AC催化剂和K_x-V₂/AC(x=0.5,1,2)催化剂。采用5种模型对动力学实验数据进行关联。结果显示,无论V₂O₅/AC催化剂是否负载K₂SO₄,Eley-Rideal模型均比其他模型可更好地描述SCR脱硝反应,碱金属化合物(K₂SO₄)的存在提高了反应活化能,但并不改变反应机理。

关键词: 选择性催化还原, V₂O₅/AC催化剂, 碱金属化合物, 反应动力学

Abstract: The influence of alkali metal compound(K₂SO₄)on kinetics of low-temperature SCR of NO by NH₃ over V₂O₅(vanadium pentoxide)/AC(activated carbon)catalyst was investigated.The reaction activity decreased obviously when doping the V₂O₅/AC catalyst with alkali metal compound.The V₂O₅/AC and K_x-V₂/AC(x=0.5,1,2)catalysts were prepared by the pore volume impregnation method.First,the influence of internal and external diffusions on the intrinsic kinetics experiment was eliminated. Then NH₃ SCR experiments with different NO-to-NH₃ ratios at various temperatures were carried out to test the model.Both the mechanical(i.e.Eley-Rideal model,Langmuir-Hinshelwood model,and Mars-van Krevelen model)and empirical(i.e.first-order model and power-rate law model)models were used to correlate the experimental data.The results showed that the Eley-Rideal model could well describe the SCR of NO by NH₃ over V₂O₅/AC catalyst than other models whether alkali metal compound was doped in the V₂O₅/AC catalyst or not.The presence of alkali metal compound increased the reaction activation energy,but not the reaction mechanism.

Key words: selective catalytic reduction, V₂O₅/AC catalyst, alkali metal compound, reaction kinetics

中图分类号:

TQ018

韩斌, 雷志刚, 刘茜, 陈标华. 碱金属化合物对V₂O₅/AC催化剂低温脱硝的影响[J]. 化工学报, 2013, 64(8): 2867-2874.

HAN Bin, LEI Zhigang, LIU Xi, CHEN Biaohua. Influence of alkali metal compound on low-temperature NH₃-SCR of NO over V₂O₅/AC catalyst[J]. CIESC Journal, 2013, 64(8): 2867-2874.

参考文献 22

[1]	Liu Qingya(刘清雅),Liu Zhenyu(刘振宇).Review of V2O5-supported carbon based catalyst for SO2 and NO removal from flue gas[J].Journal of Chemical Industry and Engineering(China)(化工学报),2008,59(8):1894-1906
[2]	Garcia-Bordeje E,Pinilla J L,Lazaro M J,Moliner R,Ferro J L G.Role of sulphates on the mechanism of NH3-SCR of NO at low temperature over carbon-coated monoliths[J].Journal of Catalysis,2005,233(1):166-175
[3]	Huang Z G,Zhu Z P,Liu Z Y.Combined effect of H2O and SO2 on V2O5/AC catalysts for NO reduction with NH3 at lower temperatures[J].Applied Catalysis B:Environmental,2002,39(4):361-368
[4]	Huang Zhanggen(黄张根),Zhu Zhenping(朱珍平),Liu Zhenyu(刘振宇).Effect of water on V2O5/AC catalyst for NO reduction by NH3 at lower temperature[J].Chinese Journal of Catalysis(催化学报),2001,22(6):532-536
[5]	Zhang Xianlong(张先龙),Wu Xueping(吴雪平),Huang Zhanggen(黄张根),Liu Zhenyu(刘振宇).Effect of potassium compounds on the catalytic activity of V2O5/AC for SCR of NO by NH3 at low temperatures NH3 adsorption and oxidation[J].Journal of Fuel Chemistry and Technology(燃料化学学报),2009,37(4):496-500
[6]	Khodayari R,Odenbrand C U I.Regeneration of commercial TiO2-V2O5-WO3 SCR catalysts used in biofuel plants[J].Applied Catalysis B:Environmental,2001,30(1/2):87-99
[7]	Krcher O,Elsener M.Chemical deactivation of V2O5/WO3-TiO2 SCR catalysts by additives and impurities from fuels,lubrication oils,and urea solution(Ⅰ):Catalytic studies[J].Applied Catalysis B:Environmental,2008,77(3/4):215-227
[8]	Tang F S,Xu B L,Shi H H,Qiu J H,Feng Y N.The poisoning effect of Na+ and Ca2+ ions doped on the V2O5/TiO2 catalysts for selective catalytic reduction of NO by NH3[J].Applied Catalysis B:Environmental,2010,94(1/2):71-76
[9]	Chen L,Li J H,Ge M F.The poisoning effect of alkali metals doping over nano V2O5/WO3-TiO2 catalysts on selective catalytic reduction of NOx by NH3[J].Chemical Engineering Journal,2011,170(2/3):531-537
[10]	Soyer S,Uzun A,Senkan S,Onal I.A quantum chemical study of nitric oxide reduction by ammonia(SCR reaction)on V2O5 catalyst surface[J].Catalysis Today,2006,118(3/4):268-278
[11]	Lin C H,Bai H.Surface acidity over vanadia/titania catalyst in the selective catalytic reduction for NO removal-in situ DRIFTS study[J].Applied Catalysis B:Environmental,2003,42(3):279-287
[12]	Lei Z G,Long A B,Wen C P,Zhang J,Chen B H. Experimental and kinetic study of low temperature selective catalytic reduction of NO with NH3 over the V2O5/AC catalyst[J].Industrial and Engineering Chemistry Research,2011,50(9):5360-5368
[13]	Lei Z G,Han B,Yang K,Chen B H.Influence of H2O on the low-temperature NH3-SCR of NO over V2O5/AC catalyst:an experimental and modeling study[J].Chemical Engineering Journal,2013,215/216:651-657
[14]	Zhu Z P,Liu Z Y,Liu S J,Niu H X.A novel carbon supported vanadium oxide catalyst for NO reduction with NH3 at low temperature[J].Applied Catalysis B:Environmental,1999,23(4/5/6):229-233
[15]	Liu F D,He H,Zhang C B,Shan W B,Shi X Y. Mechanism of the selective catalytic reduction of NOx with NH3 over environmental-friendly iron titanate catalyst[J].Catalysis Today,2011,175(1):18-25
[16]	Kentaro T,Tsunehiro T,Seiji Y,Kyoko A,Takuzo F.Kinetic study of photo-SCR with NH3 over TiO2[J].Applied Catalysis B:Environmental,2004,53(1):29-36
[17]	Sirdeshpande R A,Lighty S J.Kinetics of the selective catalytic reduction of NO with NH3 over CuO/γ-Al2O3[J].Industrial and Engineering Chemistry Research,2000,39(6):1781-1787
[18]	Lintz H G,Turek T.Intrinsic kinetics of nitric oxide reduction by ammonia on vanadia-titania catalyst[J].Applied Catalysis A:General,1992,85(1):13-25
[19]	Hsu L Y,Teng H.Catalytic NO reduction with NH3 over carbon modified by acid oxidation and by metal impression and its kinetic studies[J].Applied Catalysis B:Environmental,2001,35(1):21-30
[20]	Tronconi E.Interaction between chemical kinetics and transport phenomena in monolithic catalysts[J].Catalysis Today,1997,34(3/4):421-427
[21]	Amiridis M D,Wasch I E,Deo G,Jehng J M,Kim D S. Reactivity of V2O5 catalysts for the selective catalytic reduction of NO by NH3:influence of vanadia loading,H2O and SO2[J].Journal of Catalysis,1996,161(1):247-253
[22]	Marban G,Valdes-Solis T,Fuertes A B.Mechanism of low-temperature selective catalytic reduction of NO with NH3 over carbon-supported Mn3O4 role of surface NH3 species:SCR mechanism[J].Journal of Catalysis,2004,226(1):138-155

碱金属化合物对V₂O₅/AC催化剂低温脱硝的影响

Influence of alkali metal compound on low-temperature NH₃-SCR of NO over V₂O₅/AC catalyst

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献 22

相关文章 15

编辑推荐

Metrics

本文评价

[1]	程成, 段钟弟, 孙浩然, 胡海涛, 薛鸿祥. 表面微结构对析晶沉积特性影响的格子Boltzmann模拟[J]. 化工学报, 2023, 74(S1): 74-86.
[2]	范孝雄, 郝丽芳, 范垂钢, 李松庚. LaMnO₃/生物炭催化剂低温NH₃-SCR催化脱硝性能研究[J]. 化工学报, 2023, 74(9): 3821-3830.
[3]	汪林正, 陆俞冰, 张睿智, 罗永浩. 基于分子动力学模拟的VOCs热氧化特性分析[J]. 化工学报, 2023, 74(8): 3242-3255.
[4]	张蒙蒙, 颜冬, 沈永峰, 李文翠. 电解液类型对双离子电池阴阳离子储存行为的影响[J]. 化工学报, 2023, 74(7): 3116-3126.
[5]	禹进, 余彬彬, 蒋新生. 一种基于虚拟组分的燃烧调控化学作用量化及分析方法研究[J]. 化工学报, 2023, 74(3): 1303-1312.
[6]	陈晨, 杨倩, 陈云, 张睿, 刘冬. 不同氧浓度下煤挥发分燃烧的化学动力学研究[J]. 化工学报, 2022, 73(9): 4133-4146.
[7]	陈玉弓, 陈昊, 黄耀松. 基于分子反应动力学模拟的六甲基二硅氧烷热解机理研究[J]. 化工学报, 2022, 73(7): 2844-2857.
[8]	何聪, 钟文琪, 周冠文, 陈曦. 高海拔地区水泥生料悬浮炉分解特性研究[J]. 化工学报, 2022, 73(5): 2120-2129.
[9]	王敏, 程金兰, 李鑫, 陆晶晶, 尹崇鑫, 戴红旗. 酸性助水溶剂脱除木质素机理分析[J]. 化工学报, 2022, 73(5): 2206-2221.
[10]	杨霄, 丁锐, 李墨含, 宋正昶. 氧浓度对微通道内甲烷均相/非均相耦合反应特性的影响[J]. 化工学报, 2022, 73(12): 5427-5437.
[11]	龚翔, 李林森, 姜召. PdCo/SiO₂双金属催化剂用于杂环储氢载体的高效脱氢[J]. 化工学报, 2022, 73(10): 4448-4460.
[12]	张利合, 张凡, 李昌伦, 许德平, 徐振刚, 王永刚. BGL煤气化动力学模型构建与验证[J]. 化工学报, 2022, 73(10): 4668-4678.
[13]	赵旭, 卜昌盛, 王昕晔, 张鑫, 程晓磊, 王乃继, 朴桂林. 铁基载氧体辅助无烟煤焦富氧燃烧动力学分析[J]. 化工学报, 2022, 73(1): 384-392.
[14]	王婷婷, 曾玺, 韩振南, 王芳, 武鹏, 许光文. 微型流化床中生物质半焦水蒸气气化反应特性及动力学研究[J]. 化工学报, 2022, 73(1): 294-307.
[15]	李泽严, 樊星, 李坚. 非热等离子体强化TiO₂催化尿素分解副产物水解性能的研究[J]. 化工学报, 2021, 72(9): 4698-4707.