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程序升温脱附研究CoH-FBZ上NO_x的吸附 被引量：2

Study on adsorption of NO_x over CoH-FBZ by temperature-programmed desorption technique
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摘要 富氧条件下具有FAU和BEA两种拓扑结构的CoH-FBZ选择催化CH4还原NO,显示出较CoH-Y和CoH-Beta机械混合催化剂更好的催化活性。应用吸附和程序升温脱附(TPD)方法研究了NO和NO+O2与催化剂表面间的相互作用。结果表明,载体的拓扑结构直接影响N、O物种在催化剂表面的稳定性。NO与O2在CoH-FBZ表面形成的吸附态-NOy及NO在CoH-FBZ表面形成的吸附态相对更稳定。CoH-FBZ的NO+O2-TPD脱附曲线在630K和660K形成两个NO2脱附峰,表明在CoH-FBZ表面形成了新的-NOy吸附中心,即可能有新的Co位产生,该新Co位与沸石催化剂CoH-FBZ中新强酸位协同作用,使CoH-FBZ表现出新的CH4-SCR催化特性。 Selective catalytic reduction of NO by methane in the presence of excess oxygen over CoH-FBZ zeolite composite catalyst has an advantage over the physical mixture of CoH-Y and CoH-Beta.The interaction between NO or NO+O2 and the catalyst revealed by adsorption and temperature-programmed desorption(TPD) technique,results directly in the effect of the topological structure of supports upon the stability of N-and O-species on the surface of the catalysts.The NO+O2-TPD profile of the CoH-FBZ catalyst exhibits two NO2 desorption peaks at 630 K and 660 K,respectively.This indicates that new adsorption centers for-NOy are formed over the CoH-FBZ and adsorbed more stably on CoH-FBZ than on CoH-Y or CoH-Beta,NO does in a similar manner.The synergism of the newly formed Co sites and the new strong acidic sites contributes to the novel CH4-SCR catalytic properties of the CoH-FBZ catalysts.
作者 张金桥 贺勇 刘于英 樊卫斌 李瑞丰
机构地区 太原理工大学精细化工研究所煤科学与技术教育部和山西省重点实验室
出处 《燃料化学学报》 EI CAS CSCD 北大核心 2007年第4期452-457,共6页 Journal of Fuel Chemistry and Technology
基金 国家自然科学基金(20206020)
关键词 选择催化还原 NO CH4 程序升温脱附 CoH-FBZ selective catalytic reduction NO CH4 temperature-programmed desorption CoH-FBZ
分类号 O643.3 [理学—物理化学]
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参考文献21

  • 1[1]LI Y,ARMOR J N.Catalytic reduction of nitrogen oxides with methane in the presence of excess oxygen[J].Appl Catal B,1992,1(4):31-40.
  • 2[2]ARMOR J N.Catalytic reduction of nitrogen oxides with methane in the presence of excess oxygen:A review[J].Catal Today,1995,26(2):147-158.
  • 3[3]TRAA Y,BURGER B,WEITKAMP J.Zeolite-based materials for the selective catalytic reduction of NOx with hydrocarbons[J].Micropor Mesopor Mater,1999,30(1):3-41.
  • 4[4]LI N,WANG A Q,LI L,WANG X D,REN L L,ZHANG T.NO reduction by CH4 in the presence of excess O2 over Pd/sulfated alumina catalysts[J].Appl Catal B,2004,50(1):1-7
  • 5[5]LI N,WANG A Q,TANG J W,WANG X D,LIANG D B,ZHANG T.NO reduction by CH4 in the presence of excess O2 over Co/sulfated zirconia catalysts[J].Appl Catal B,2003,43(2):195-201.
  • 6[7]FLIATOURA K D,VERKIOS X E,COSTA C N.Efstathious selective catalytic reduction of nitric oxide by methane in the presence of oxygen over CaO catalysts[J].J Catal,1999,183(2):323-335.
  • 7[8]FOKEMA M D,YING J Y.The selective catalytic reduction of nitric oxide with methane over scandium oxide,yttrium oxide and lanthanum oxide[J].Appl Catal B,1998,18(1-2):71-77.
  • 8[11]LUKYANOV D B,SILL G A,D'ITRI J L,HALL W K.Comparison of catalyzed and homogeneous reactions of hydrocarbons for selective catalytic reduction (SCR) of NOx[J].J Catal,1995,153(2):265-274.
  • 9[12]RESINI C,MONTANARI T,NAPPI L,BAGNASCO G,TURCO M,BUSCA G,BREGANI F,NOTARO M,ROCCHINI G.Selective catalytic reduction of NOx by methane over Co-H-MFI and Co-H-FER zeolite catalysts:Characterization and catalytic activity[J].J Catal,2003,214(2):179-190.
  • 10[13]IVANOVA E,HADJIIVANOV K,KLISSURSKI D,BEVILACQUA M,ARMAROLI T,BUSCA G.FT-IR study of species arising after NO adsorption and NO+O2 co-adsorption on CoY:Comparison with Co-ZSM-5[J].Micropor Mesopor Mater,2001,46(2-3):299-309.

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燃料化学学报
2007年 第4期

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