Fe-Cu/ZSM-5催化剂的NH_3-SCR脱硝性能
|
摘要
通过浸渍法制备了Fe和Cu含量比不同的系列Fe-Cu/ZSM-5催化剂,利用XRD、H2-TPR、NH3-TPD和原位DRIFTS等技术对催化剂进行了表征,并对其NH3-SCR脱硝性能进行了研究。结果表明,双金属改性的Fe-Cu/ZSM-5催化剂活性温度窗口拓宽,其中,Fe-Cu/ZSM-5 1∶4催化剂脱硝性能优异,250-450℃下脱硝效率均超过90%,335℃时脱硝效率达到最大值96.46%。铜和铁物种能以无定型氧化物良好分散于载体表面,双金属负载改性催化剂保留了ZSM-5的晶体结构。Fe-Cu/ZSM-5 1∶4催化剂具备丰富的酸性位、良好的氧化还原性能,一定温度条件下NH3-SCR反应过程中同时存在E-R机理和L-H机理,且E-R机理反应起始温度低于L-H机理;200℃为催化脱硝反应的起活温度。
A series of Fe-Cu/ZSM-5 catalysts with different Fe/Cu molar ratios were prepared by impregnation method and characterized by XRD, H2-TPR, NH_3-TPD and in situ DRIFTS; their performance in the denitrification( de-NOx) process via NH_3-SCR was investigated. The results showed that the bimetallic modified Fe-Cu/ZSM-5 catalysts have a broad active temperature window. Especially,the Fe-Cu/ZSM-5 1 ∶4 catalyst with a Fe/Cu molar ratio of 1 ∶4 displays the highest activity; over it,the de NOxefficiency reaches the maximum of99.46% at 335 ℃ and keeps above 90% at 250-450 ℃. Copper and iron species,present as amorphous oxides,are finely dispersed on the catalyst surface and the bimetallic modified catalysts retain the crystal structure of ZSM-5. The Fe-Cu/ZSM-5 1 ∶ 4 catalyst exhibits abundant acid sites and excellent redox performance. E-R mechanism and L-H mechanism may coexist during the NH_3-SCR reaction under certain temperature; moreover,the onset temperature of E-R mechanism is much lower than that of L-H mechanism and the denitration reaction may be ignited at 200 ℃.
A series of Fe-Cu/ZSM-5 catalysts with different Fe/Cu molar ratios were prepared by impregnation method and characterized by XRD, H2-TPR, NH_3-TPD and in situ DRIFTS; their performance in the denitrification( de-NOx) process via NH_3-SCR was investigated. The results showed that the bimetallic modified Fe-Cu/ZSM-5 catalysts have a broad active temperature window. Especially,the Fe-Cu/ZSM-5 1 ∶4 catalyst with a Fe/Cu molar ratio of 1 ∶4 displays the highest activity; over it,the de NOxefficiency reaches the maximum of99.46% at 335 ℃ and keeps above 90% at 250-450 ℃. Copper and iron species,present as amorphous oxides,are finely dispersed on the catalyst surface and the bimetallic modified catalysts retain the crystal structure of ZSM-5. The Fe-Cu/ZSM-5 1 ∶ 4 catalyst exhibits abundant acid sites and excellent redox performance. E-R mechanism and L-H mechanism may coexist during the NH_3-SCR reaction under certain temperature; moreover,the onset temperature of E-R mechanism is much lower than that of L-H mechanism and the denitration reaction may be ignited at 200 ℃.
引文
[1]马腾坤,房晶瑞,孙勇,汪澜.Ti O2载体掺杂对Mn-Ce/Ti O2催化剂低温脱硝性能影响研究[J].燃料化学学报,2017,45(4):491-496.(MA Teng-kun,FANG Jing-rui,SUN Yong,WANG Lan.Study on the modification effect of Ti O2support on the low temperature denitration activity of M n-Ce/Ti O2catalysts[J].J Fuel Chem Technol,2017,45(4):491-496.)
[2]张相俊,刘晓刚,李清雍,李岩,魏波,王虹,李翠清,宋永吉.载体对铜基催化剂NH3-SCR低温脱硝性能的影响[J].燃料化学学报,2017,45(2):220-226.(ZHANG Xiang-jun,LIU Xiao-gang,LI Qing-yong,LI Yan,WEI Bo,WANG Hong,LI Cui-qing,SONG Yong-ji.Effect of carrier on the performance of copper based catalyst for selective catalytic reduction of NO w ith NH3at low temperature[J].J Fuel Chem Technol,2017,45(2):220-226.)
[3]ZHANG K K,ZHAO J,ZHU Y C,XU Z H.Model predictive control case study:Selective catalytic reduction(SCR)system in coal-fired pow er plant[C].Control Conference,IEEE,2016:4300-4305.
[4]周子健,刘小伟,葛振武,夏永俊,廖志强,江盟,邵海忠.基于失活商业脱硝催化剂制备的再生SCR催化剂性能研究[J].中国电机工程学报,2017,37(9):2614-2622.(ZHOU Zi-jian,LIU Xiao-wei,GE Zhen-wu,XIA Yong-jun,LIAO Zhi-qiang,JIANG Meng,SHAO Hai-zhong.NO reduction over a novel SCR catalyst regenerated from deactivated commercial De NOxcatalyst[J].Proc CSEE,2017,37(9):2614-2622.)
[5]乔南利,杨忆新,宋焕巧,郭林,罗明生.低温NH3-SCR脱硝催化剂的研究现状与进展[J].化工环保,2017,37(3):282-288.(QIAO Nan-li,YANG Yi-xin,SONG Huan-qiao,GUO Lin,LUO Ming-sheng.Research status and progresses on NH3-SCR catalysts for lowtemperature denitration[J].Environ Prot Chem Ind,2017,37(3):282-288.)
[6]梁辉,查贤斌,归柯庭.γFe2O3的选择性催化还原脱硝性能及其对NH3和NO的表面吸附行为研究[J].中国电机工程学报,2014,34(32):5734-5740.(LIANG Hui,ZHA Xian-bin,GUI Ke-ting.A study of selective catalysis reduction denitration performance and adsorption of NH3and NO Over Fe2O3catalyst[J].Proc CSEE,2014,34(32):5734-5740.)
[7]朱彦涛,吕刚,宋崇林,李博,陈科.一价铜改性ZSM-5催化剂及其催化碳烟氧化反应性能研究[J].燃料化学学报,2017,45(1):106-112.(ZHU Yan-tao,LGang,SONG Chong-lin,LI Bo,CHEN Ke.Catalytic oxidation of soot over monovalent copper modified ZSM-5[J].J Fuel Chem Technol,2017,45(1):106-112.)
[8]LAI S S,SHE Y,ZHAN W C,GUO Y,GUO Y L,WANG L,LU G Z.Performance of Fe-ZSM-5 for selective catalytic reduction of NOx w ith NH3:Effect of the atmosphere during the preparation of catalysts[J].J Mol Catal A:Chem,2016,424:232-240.
[9]RUTKOWSKA M,PACIA I,BASAG S,KOWALCZYK A,PIWOWARSKA Z,DUDA M,TARACH K A,GORAMAREK K,M ICHALIK M,DIAZ U.Catalytic performance of commercial Cu-ZSM-5 zeolite modified by desilication in NH3-SCR and NH3-SCO processes[J].M icroporous M esoporous M ater,2017,246(Supplement C):193-206.
[10]吕刚,范啸天,宋崇林,李博,宋金瓯.Cu/ZSM-5催化剂制备及SCR催化性能研究[J].工程热物理学报,2015,36(10):2276-2281.(LV Gang,FAN Xiao-tian,SONG Chong-lin,LI Bo,SONG Jin-ou.SCR Catalytic performance of Cu/ZSM-5 catalyst prepared by solid state ion exchange[J].J Eng Thermophysics,2015,36(10):2276-2281.)
[11]KRISHNA K,MAKKEE M.Preparation of Fe-ZSM-5 with enhanced activity and stability for SCR of NOx[J].Catal Today,2006,114(1):23-30.
[12]DU T Y,QU H X,LIU Q,ZHONG Q,MA W H.Synthesis,activity and hydrophobicity of Fe-ZSM-5@silicalite-1 for NH3-SCR[J].Chem Eng J,2015,262:1199-1207.
[13]SULTANA A,SASAKI M,SUZUKI K,HAMADA H.Tuning the NOxconversion of Cu-Fe/ZSM-5 catalyst in NH3-SCR[J].Catal Commun,2013,41:21-25.
[14]LIU F,HE H.Structure-activity relationship of iron titanate catalysts in the selective catalytic reduction of NOxw ith NH3[J].J Phys Chem C,2010,114(40):16929-1636.
[15]GRA-MAREK K,BRYLEWSKA K,TARACH K A,RUTKOWSKA M,JABLONSKA M,CHOI M,CHMIELARZ L.IR studies of Fe modified ZSM-5 zeolites of diverse mesopore topologies in the terms of their catalytic performance in NH3-SCR and NH3-SCO processes[J].Appl Catal B:Environ,2015,179:589-598.
[16]ZHANG T,LIU J,WANG D X,ZHAO Z,WEI Y C,CHENG K,JIANG G Y,DUAN A J.Selective catalytic reduction of NO with NH3over HZSM-5-supported Fe-Cu nanocomposite catalysts:The Fe-Cu bimetallic effect[J].Appl Catal B:Environ,2014,148/149:520-531.
[17]QI G,YANG R T.Selective catalytic oxidation(SCO)of ammonia to nitrogen over Fe/ZSM-5 catalysts[J].Appl Catal A:Gen,2005,287(1):25-33.
[18]LONG R Q,YANG R T.Temperature-programmed desorption/surface reaction(TPD/TPSR)study of Fe-exchanged ZSM-5 for selective catalytic reduction of nitric oxide by ammonia[J].J Catal,2001,198(1):20-28.
[19]MU W T,ZHU J,ZHANG S,GUO Y Y,SU L Q,LI X Y,LI Z.Novel proposition on mechanism aspects over Fe-Mn/ZSM-5 catalyst for NH3-SCR of NOxat low temperature:Rate and direction of multifunctional electron-transfer-bridge and in situ DRIFTS analysis[J].Catal Sci Technol,2016,6(20):7532-7548.
[20]XIA Y,ZHAN W C,GUO Y,GUO LY,LU G Z.Fe-Beta zeolite for selective catalytic reduction of NOxw ith NH3:Influence of Fe content[J].Chin J Catal,2016,37(12):2069-2078.
[21]JIN Q J,SHEN Y S,ZHU S M,LI X H,HU M.Promotional effects of Er incorporation in Ce O2(Zr O2)/Ti O2for selective catalytic reduction of NO by NH3[J].Chin J Catal,2016,37(9):1521-1529.
[22]YU C L,HUANG B C,DONG L F,CHEN F,YANG Y,FAN Y M,YANG Y X,LIU X Q,WANG X N.Effect of Pr/Ce addition on the catalytic performance and SO2resistance of highly dispersed M n Ox/SAPO-34 catalyst for NH3-SCR at low temperature[J].Chem Eng J,2017,316:1059-1068.
[23]SONG L Y,ZHAN Z C,LIU X J,HE H,QIU W G,ZI X H.NOxselective catalytic reduction by ammonia over Cu-ETS-10 catalysts[J].Chin J Catal,2014,35(7):1030-1035.
[24]DE LA TORRE U,PEREDA-AYO B,ROMERO-S EZ M,ARANZABAL A,GONZALEZ-MARCOS MP,GONZALEZ-MARCOS J A,GONZALEZ-VELASCO J R.Screening of Fe-Cu-Zeolites prepared by different methodology for application in NSR-SCR combined De NOx systems[J].Top Catal,2013,56(1/8):215-221.
[25]SERRA R,VECCHIETTI M J,MIRO E,BOIX A.In,Fe-zeolites:Active and stable catalysts for the SCR of NOx-kinetics,characterization and deactivation studies[J].Catal Today,2008,133:480-486.
[26]YAN Q H,NIE Y,YANG R Y,CUI Y H,O'HARE D,WANG Q.Highly dispersed Cuy Al Oxmixed oxides as superior low-temperature alkali metal and SO2resistant NH3-SCR catalysts[J].Appl Catal A:Gen,2017,538:37-50.
[27]FENG B J,WANG Z,SUN Y Y,ZHANG C H,TANG SF,LI X B,HUANG X.Size controlled ZSM-5 on the structure and performance of Fe catalyst in the selective catalytic reduction of NOxw ith NH3[J].Catal Commun,2016,80:20-23.
[28]YAO X J,MA K L,ZOU W X,HE S G,AN J B,YANG F M,DONG L.Influence of preparation methods on the physicochemical properties and catalytic performance of M n Ox-Ce O2catalysts for NH3-SCR at low temperature[J].Chin J Catal,2017,38(1):146-159.
[29]XU L,LI X S,CROCKER M,ZHANG Z S,ZHU A M,SHI C.A study of the mechanism of low-temperature SCR of NO with NH3on M n Ox/Ce O2[J].J Mol Catal A:Chem,2013,378(11):82-90.
[30]SUN M M,WANG S N,LI Y S,WANG Q,XU H D,CHEN Y Q.Promotion of catalytic performance by adding Cu into Pt/ZSM-5 catalyst for selective catalytic oxidation of ammonia[J].J Taiw an Inst Chem E,2017,78:401-408.
[31]NAM K B,KWON D W,HONG S C.DRIFT study on promotion effects of tungsten-modified Mn/Ce/Ti catalysts for the SCR reaction at low-temperature[J].Appl Catal A:Gen,2017,542:55-62.
[32]CHEN L Q,NIU X Y,LI Z B,DONG Y L,ZHANG Z P,YUAN F L,ZHU Y J.Promoting catalytic performances of Ni-Mn spinel for NH3-SCR by treatment w ith SO2and H2O[J].Catal Commun,2016,85:48-51.
[33]张贺,邹永刚,彭悦.硫酸化对Ce O-Zr O催化剂上NH3选择催化还原NO反应的影响[J].催化学报,2017,38(1):160-167.(ZHANG He,ZHOU Yong-gang,PENG Yue.Influence of sulfation on Ce O2-Zr O2catalysts for NO reduction w ith NH3[J].Chin J Catal,2017,38(1):160-167.)
[34]LIU J,LI X Y,ZHAO Q D,KE J,XIAO H N,LV X J,LIU S M,TADE M,WANG S B.Mechanistic investigation of the enhanced NH3-SCR on cobalt-decorated Ce-Ti mixed oxide:In situ FT-IR analysis for structure-activity correlation[J].Appl Catal B:Environ,2017,200:297-308.
[35]WENG X L,DAI X X,ZENG Q S,LIU Y,WU Z B.DRIFT studies on promotion mechanism of H3PW12O40in selective catalytic reduction of NO w ith NH3[J].J Colloid Interf Sci,2016,461:9-14.
[36]HADJIIVANOV K I.Identification of neutral and charged NxOy surface species by IR spectroscopy[J].Catal Rev,2000,42(1/2):71-144.
[2]张相俊,刘晓刚,李清雍,李岩,魏波,王虹,李翠清,宋永吉.载体对铜基催化剂NH3-SCR低温脱硝性能的影响[J].燃料化学学报,2017,45(2):220-226.(ZHANG Xiang-jun,LIU Xiao-gang,LI Qing-yong,LI Yan,WEI Bo,WANG Hong,LI Cui-qing,SONG Yong-ji.Effect of carrier on the performance of copper based catalyst for selective catalytic reduction of NO w ith NH3at low temperature[J].J Fuel Chem Technol,2017,45(2):220-226.)
[3]ZHANG K K,ZHAO J,ZHU Y C,XU Z H.Model predictive control case study:Selective catalytic reduction(SCR)system in coal-fired pow er plant[C].Control Conference,IEEE,2016:4300-4305.
[4]周子健,刘小伟,葛振武,夏永俊,廖志强,江盟,邵海忠.基于失活商业脱硝催化剂制备的再生SCR催化剂性能研究[J].中国电机工程学报,2017,37(9):2614-2622.(ZHOU Zi-jian,LIU Xiao-wei,GE Zhen-wu,XIA Yong-jun,LIAO Zhi-qiang,JIANG Meng,SHAO Hai-zhong.NO reduction over a novel SCR catalyst regenerated from deactivated commercial De NOxcatalyst[J].Proc CSEE,2017,37(9):2614-2622.)
[5]乔南利,杨忆新,宋焕巧,郭林,罗明生.低温NH3-SCR脱硝催化剂的研究现状与进展[J].化工环保,2017,37(3):282-288.(QIAO Nan-li,YANG Yi-xin,SONG Huan-qiao,GUO Lin,LUO Ming-sheng.Research status and progresses on NH3-SCR catalysts for lowtemperature denitration[J].Environ Prot Chem Ind,2017,37(3):282-288.)
[6]梁辉,查贤斌,归柯庭.γFe2O3的选择性催化还原脱硝性能及其对NH3和NO的表面吸附行为研究[J].中国电机工程学报,2014,34(32):5734-5740.(LIANG Hui,ZHA Xian-bin,GUI Ke-ting.A study of selective catalysis reduction denitration performance and adsorption of NH3and NO Over Fe2O3catalyst[J].Proc CSEE,2014,34(32):5734-5740.)
[7]朱彦涛,吕刚,宋崇林,李博,陈科.一价铜改性ZSM-5催化剂及其催化碳烟氧化反应性能研究[J].燃料化学学报,2017,45(1):106-112.(ZHU Yan-tao,LGang,SONG Chong-lin,LI Bo,CHEN Ke.Catalytic oxidation of soot over monovalent copper modified ZSM-5[J].J Fuel Chem Technol,2017,45(1):106-112.)
[8]LAI S S,SHE Y,ZHAN W C,GUO Y,GUO Y L,WANG L,LU G Z.Performance of Fe-ZSM-5 for selective catalytic reduction of NOx w ith NH3:Effect of the atmosphere during the preparation of catalysts[J].J Mol Catal A:Chem,2016,424:232-240.
[9]RUTKOWSKA M,PACIA I,BASAG S,KOWALCZYK A,PIWOWARSKA Z,DUDA M,TARACH K A,GORAMAREK K,M ICHALIK M,DIAZ U.Catalytic performance of commercial Cu-ZSM-5 zeolite modified by desilication in NH3-SCR and NH3-SCO processes[J].M icroporous M esoporous M ater,2017,246(Supplement C):193-206.
[10]吕刚,范啸天,宋崇林,李博,宋金瓯.Cu/ZSM-5催化剂制备及SCR催化性能研究[J].工程热物理学报,2015,36(10):2276-2281.(LV Gang,FAN Xiao-tian,SONG Chong-lin,LI Bo,SONG Jin-ou.SCR Catalytic performance of Cu/ZSM-5 catalyst prepared by solid state ion exchange[J].J Eng Thermophysics,2015,36(10):2276-2281.)
[11]KRISHNA K,MAKKEE M.Preparation of Fe-ZSM-5 with enhanced activity and stability for SCR of NOx[J].Catal Today,2006,114(1):23-30.
[12]DU T Y,QU H X,LIU Q,ZHONG Q,MA W H.Synthesis,activity and hydrophobicity of Fe-ZSM-5@silicalite-1 for NH3-SCR[J].Chem Eng J,2015,262:1199-1207.
[13]SULTANA A,SASAKI M,SUZUKI K,HAMADA H.Tuning the NOxconversion of Cu-Fe/ZSM-5 catalyst in NH3-SCR[J].Catal Commun,2013,41:21-25.
[14]LIU F,HE H.Structure-activity relationship of iron titanate catalysts in the selective catalytic reduction of NOxw ith NH3[J].J Phys Chem C,2010,114(40):16929-1636.
[15]GRA-MAREK K,BRYLEWSKA K,TARACH K A,RUTKOWSKA M,JABLONSKA M,CHOI M,CHMIELARZ L.IR studies of Fe modified ZSM-5 zeolites of diverse mesopore topologies in the terms of their catalytic performance in NH3-SCR and NH3-SCO processes[J].Appl Catal B:Environ,2015,179:589-598.
[16]ZHANG T,LIU J,WANG D X,ZHAO Z,WEI Y C,CHENG K,JIANG G Y,DUAN A J.Selective catalytic reduction of NO with NH3over HZSM-5-supported Fe-Cu nanocomposite catalysts:The Fe-Cu bimetallic effect[J].Appl Catal B:Environ,2014,148/149:520-531.
[17]QI G,YANG R T.Selective catalytic oxidation(SCO)of ammonia to nitrogen over Fe/ZSM-5 catalysts[J].Appl Catal A:Gen,2005,287(1):25-33.
[18]LONG R Q,YANG R T.Temperature-programmed desorption/surface reaction(TPD/TPSR)study of Fe-exchanged ZSM-5 for selective catalytic reduction of nitric oxide by ammonia[J].J Catal,2001,198(1):20-28.
[19]MU W T,ZHU J,ZHANG S,GUO Y Y,SU L Q,LI X Y,LI Z.Novel proposition on mechanism aspects over Fe-Mn/ZSM-5 catalyst for NH3-SCR of NOxat low temperature:Rate and direction of multifunctional electron-transfer-bridge and in situ DRIFTS analysis[J].Catal Sci Technol,2016,6(20):7532-7548.
[20]XIA Y,ZHAN W C,GUO Y,GUO LY,LU G Z.Fe-Beta zeolite for selective catalytic reduction of NOxw ith NH3:Influence of Fe content[J].Chin J Catal,2016,37(12):2069-2078.
[21]JIN Q J,SHEN Y S,ZHU S M,LI X H,HU M.Promotional effects of Er incorporation in Ce O2(Zr O2)/Ti O2for selective catalytic reduction of NO by NH3[J].Chin J Catal,2016,37(9):1521-1529.
[22]YU C L,HUANG B C,DONG L F,CHEN F,YANG Y,FAN Y M,YANG Y X,LIU X Q,WANG X N.Effect of Pr/Ce addition on the catalytic performance and SO2resistance of highly dispersed M n Ox/SAPO-34 catalyst for NH3-SCR at low temperature[J].Chem Eng J,2017,316:1059-1068.
[23]SONG L Y,ZHAN Z C,LIU X J,HE H,QIU W G,ZI X H.NOxselective catalytic reduction by ammonia over Cu-ETS-10 catalysts[J].Chin J Catal,2014,35(7):1030-1035.
[24]DE LA TORRE U,PEREDA-AYO B,ROMERO-S EZ M,ARANZABAL A,GONZALEZ-MARCOS MP,GONZALEZ-MARCOS J A,GONZALEZ-VELASCO J R.Screening of Fe-Cu-Zeolites prepared by different methodology for application in NSR-SCR combined De NOx systems[J].Top Catal,2013,56(1/8):215-221.
[25]SERRA R,VECCHIETTI M J,MIRO E,BOIX A.In,Fe-zeolites:Active and stable catalysts for the SCR of NOx-kinetics,characterization and deactivation studies[J].Catal Today,2008,133:480-486.
[26]YAN Q H,NIE Y,YANG R Y,CUI Y H,O'HARE D,WANG Q.Highly dispersed Cuy Al Oxmixed oxides as superior low-temperature alkali metal and SO2resistant NH3-SCR catalysts[J].Appl Catal A:Gen,2017,538:37-50.
[27]FENG B J,WANG Z,SUN Y Y,ZHANG C H,TANG SF,LI X B,HUANG X.Size controlled ZSM-5 on the structure and performance of Fe catalyst in the selective catalytic reduction of NOxw ith NH3[J].Catal Commun,2016,80:20-23.
[28]YAO X J,MA K L,ZOU W X,HE S G,AN J B,YANG F M,DONG L.Influence of preparation methods on the physicochemical properties and catalytic performance of M n Ox-Ce O2catalysts for NH3-SCR at low temperature[J].Chin J Catal,2017,38(1):146-159.
[29]XU L,LI X S,CROCKER M,ZHANG Z S,ZHU A M,SHI C.A study of the mechanism of low-temperature SCR of NO with NH3on M n Ox/Ce O2[J].J Mol Catal A:Chem,2013,378(11):82-90.
[30]SUN M M,WANG S N,LI Y S,WANG Q,XU H D,CHEN Y Q.Promotion of catalytic performance by adding Cu into Pt/ZSM-5 catalyst for selective catalytic oxidation of ammonia[J].J Taiw an Inst Chem E,2017,78:401-408.
[31]NAM K B,KWON D W,HONG S C.DRIFT study on promotion effects of tungsten-modified Mn/Ce/Ti catalysts for the SCR reaction at low-temperature[J].Appl Catal A:Gen,2017,542:55-62.
[32]CHEN L Q,NIU X Y,LI Z B,DONG Y L,ZHANG Z P,YUAN F L,ZHU Y J.Promoting catalytic performances of Ni-Mn spinel for NH3-SCR by treatment w ith SO2and H2O[J].Catal Commun,2016,85:48-51.
[33]张贺,邹永刚,彭悦.硫酸化对Ce O-Zr O催化剂上NH3选择催化还原NO反应的影响[J].催化学报,2017,38(1):160-167.(ZHANG He,ZHOU Yong-gang,PENG Yue.Influence of sulfation on Ce O2-Zr O2catalysts for NO reduction w ith NH3[J].Chin J Catal,2017,38(1):160-167.)
[34]LIU J,LI X Y,ZHAO Q D,KE J,XIAO H N,LV X J,LIU S M,TADE M,WANG S B.Mechanistic investigation of the enhanced NH3-SCR on cobalt-decorated Ce-Ti mixed oxide:In situ FT-IR analysis for structure-activity correlation[J].Appl Catal B:Environ,2017,200:297-308.
[35]WENG X L,DAI X X,ZENG Q S,LIU Y,WU Z B.DRIFT studies on promotion mechanism of H3PW12O40in selective catalytic reduction of NO w ith NH3[J].J Colloid Interf Sci,2016,461:9-14.
[36]HADJIIVANOV K I.Identification of neutral and charged NxOy surface species by IR spectroscopy[J].Catal Rev,2000,42(1/2):71-144.