Influence of MnO2 modification methods on the catalytic performance of CuO/CeO2 for NO reduction by CO

稀土学报(英文版), 2014, (2): 131-138. doi: 10.1016/S1002-0721(14)60042-9

姚小江 ^1, , 熊燕 ^2, , 孙敬方 ^3, , 高飞 ^4, , 邓昱 ^5, , 汤常金 ^6, , 董林 ^7,

1.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

2.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

3.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

4.Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, Nanjing University, Nanjing 210093, China

5.Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, Nanjing University, Nanjing 210093, China

6.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

7.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

基金项目: National Basic Research Program of China(973 Program,2009CB623500,2010CB732300) Jiangsu Province Scientific Research Foundation for Graduate(CXZZ12_0038) Jiangsu Province Science and Technology Support Program(Industrial, BE2011167) National Natural Science Foundation of China(20973091,21273110)

Influence of MnO2 modification methods on the catalytic performance of CuO/CeO2 for NO reduction by CO

YAO Xiaojiang ^1, , XIONG Yan ^2, , SUN Jingfang ^3, , GAO Fei ^4, , DENG Yu ^5, , TANG Changjin ^6, , DONG Lin ^7,

1.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

2.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

3.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

4.Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, Nanjing University, Nanjing 210093, China

5.Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, Nanjing University, Nanjing 210093, China

6.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

7.Key Laboratory of Mesoscopic Chemistry of M0E, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

Keywords： rare earths

In order to investigate the influence of MnO2 modification methods on the catalytic performance of CuO/CeO2 catalyst for NO reduction by CO, two series of catalysts (xCuyMn/Ce and xCu/yMn/Ce) were prepared by co-impregnation and step-wise-impregnation methods, and characterized by means of X-ray diffraction (XRD), Raman spectra, H2-temperature programmed reduction (H2-TPR), in situ diffuse reflectance infrared Fourier transform spectra (in situ DRIFTS) techniques. Furthermore, the cata-lytic performances of these catalysts were evaluated by NO+CO model reaction. The obtained results indicated that:(1) The catalysts acquired by co-impregnation method exhibited stronger interaction owing to the more sufficient contact among each component of the catalysts compared with the catalysts obtained by stepwise-impregnation method, which was beneficial to the improvement of the reduction behavior;(2) The excellent reduction behavior was conducive to the formation of low valence state copper species (Cu+/Cu0) and more oxygen vacancies (especially the surface synergetic oxygen vacancies (SSOV, Cu+-Mn(4-x)+)) during the reaction process, which were beneficial to the adsorption of CO species and the dissociation of NO species, respectively, and further promoted the en-hancement of the catalytic performance. Finally, in order to further understand the difference between the catalytic performances of these catalysts prepared by co-impregnation and stepwise-impregnation methods, a possible reaction mechanism (schematic diagram) was tentatively proposed.

参考文献

[1]	Chen J F;Zhu J J;Zhan Y Y;Lin X Y,Cai G H,Wei K M,Zhen Q .Characterization and catalytic performance of Cu/CeO2 and Cu/MgO-CeO2 catalysts for NO reduction by CO[J].Appl Catal A,2009,363(1-2):208.
[2]	Granger P;Lecomte J J;Leclercq L;Leclercq G .An at-tempt at modelling the activity of Pt-Rh/Al2O3 three-way catalysts in the CO+NO reaction[J].Appl Catal A,2001,208(1-2):369.
[3]	Cónsul J M D;Costilla I;Gigola C E;Baibich I M .NO reduction with CO on alumina-modified silica-supported palladium and molybdenum-palladium catalysts[J].Appl Catal A,2008,339(02):151.
[4]	Araya P;Gracia F;Cortés J;Wolf E E .FTIR study of the reduction reaction of NO by CO over Rh/SiO2 catalysts with different crystallite size[J].Appl Catal B,2002,38(02):77.
[5]	Nováková J;Kubelková L .Contribution to the mechanism of NO reduction by CO over Pt/NaX zeolite[J].Appl Catal B,1997,14(3-4):273.
[6]	Zhu H O;Kim J R;Ihm S K .Characteristics of Pt/WO3/CeO2/ZrO2 catalysts for catalytic reduction of NO by CO[J].Appl Catal B,2009,86(1-2):87.
[7]	Jean-Luc Freysz;Jacques Saussey;Jean-Claude Lavalley .In Situ FTIR Study of the NO +CO Reaction on a Silica-Supported Platinum Catalyst at Atmospheric Pressure Using a New Pulse Technique[J].Journal of Catalysis,2001(1):131-138.
[8]	Yao X J;Yu Q;Ji Z Y;Lv Y Y,Cao Y,Tang C J,Gao F,Dong L,Chen Y .A comparative study of different doped metal cations on the reduction,adsorption and activity of CuO/Ce0.67M0 33O2(M=Zr4+,Sn4+,Ti4+)catalysts for NO+CO reaction[J].Appl Catal B,2013,130-131(0):293.
[9]	Jiang X Y;Lou L P;Ding G H;Chen Y X Zheng X M .The active species and catalytic properties of CuO/CeO2-TiO2 catalysts for NO+CO reaction[J].Journal of Materials Science,2004,39(14):4663.
[10]	Reddy B M;Lakshmanan P;Khan A .Investigation of sur-face structures of dispersed V2O5 on CeO2-SiO2,CeO2-TiO2,and CeO2-ZrO2 mixed oxides by XRD,Raman,and XPS techniques[J].Journal of Physical Chemistry B,2004,108(43):16855.
[11]	Xiaojiang Yao;Changjin Tang;Zeyang Ji .Investigation of the physicochemical properties and catalytic activities of Ce_(0.67)M_(0.33)O2 (M = Zr~(4+), Ti~(4+), Sn~(4+)) solid solutions for NO removal by CO[J].Catalysis science & technology,2013(3):688-698.
[12]	Yu, Q.;Wu, X.;Tang, C.;Qi, L.;Liu, B.;Gao, F.;Sun, K.;Dong, L.;Chen, Y. .Textural, structural, and morphological characterizations and catalytic activity of nanosized CeO_2-MO_x (M=Mg~(2+), Al~(3+), Si~(4+)) mixed oxides for CO oxidation[J].Journal of Colloid and Interface Science,2011(1):341-352.
[13]	Jiang X Y;Jia Y R;Huang H;Zheng X M .Effect of pre-treatment atmosphere on CuO/TiO2 activities in NO+CO reaction[J].Catalysis Letters,2005,104(03):169.
[14]	Liu L J;Cai J G;Qi L;Yu Q,Sun K Q,Liu B,Gao F,Dong L,Chen Y .Influence of supports structure on the ac-tivity and adsorption behavior of copper-based catalysts for NO reduction[J].J Mol Catal A,2010,327(1-2):1.
[15]	Hu Y H;Dong L;Shen M M;Liu D,Wang J,Ding W P,Chen Y .Influence of supports on the activities of copper oxide species in the low-temperature NO+CO reaction[J].Appl Catal B,2001,31(01):61.
[16]	Invanka Spassova;Mariana Khristova;Dimitar Panalyotov;Dimitar Mehandjiev .Coprecipitated CuO-MnO_x Catalysts for Low-Temperature CO-NO and CO-NO-O_2 Reactions[J].Journal of Catalysis,1999(1):43-57.
[17]	Ivanka Spassova;Dimitar Mehandjiev .Mechanism of no conversion over a coprecipitated CuO_MnOx spinel-like catalyst[J].Reaction kinetics & catalysis letters,2000(2):231-237.
[18]	Spassova I;Khristova M;Nickolov R;Mehandjiev D .Novel application of depleted fullerene soot (DFS) as support of catalysts for low-temperature reduction of NO with CO[J].Journal of Colloid and Interface Science,2008(1):186-193.
[19]	Liu, L.;Yu, Q.;Zhu, J.;Wan, H.;Sun, K.;Liu, B.;Zhu, H.;Gao, F.;Dong, L.;Chen, Y. .Effect of MnO_x modification on the activity and adsorption of CuO/Ce_(0.67)Zr_(0.33)O_2 catalyst for NO reduction[J].Journal of Colloid and Interface Science,2010(1):246-255.
[20]	A. Gurbani;J. L. Ayastuy;M. P. Gonzdlez-Marcos;J. E. Herrero;J.M. Guil;M. A. Gutierrez-Ortiz .Comparative Study Of Cuo-ceo_2 Catalysts Prepared By Wet Impregnation And Deposition-precipitation[J].International journal of hydrogen energy,2009(1):547-553.
[21]	Duan K J;Tang X L;Yi H H;Ning P Wang L D .Rare earth oxide modified Cu-Mn compounds supported on TiO2 catalysts for low temperature selective catalytic oxi-dation of ammonia and in lean oxygen[J].Journal of Rare Earths,2010,28(Suppl 1):338.
[22]	Yu Q;Yao X J;Zhang H L;Gao F,Dong L .Effect of ZrO2 addition method on the activity of Al2O3-supported CuO for NO reduction with CO:Impregnation vs.copre-cipitation[J].Appl Catal A,2012,423-424(0):42.
[23]	Xiaojiang Yao;Fei Gao;Qiang Yu .NO reduction by CO over CuO-CeO2 catalysts: effect of preparation methods[J].Catalysis science & technology,2013(5):1355-1366.
[24]	Jixin Zhu;Wenhui Shi;Ni Xiao .Oxidation-Etching Preparation of MnO2 Tubular Nanostructures for High-Performance Supercapacitors[J].ACS applied materials & interfaces,2012(5):2769-2774.
[25]	QIAO Dongsheng,LU Guanzhong,GUO Yun,WANG Yanqin,GUO Yanglong.Effect of water vapor on the CO and CH4 catalytic oxidation over CeO2-Mox (M=Cu, Mn, Fe, Co, and Ni) mixed oxide[J].稀土学报（英文版）,2010(05):742-746.
[26]	Li T Y;Chiang S J;Liaw B J;Chen Y Z .Catalytic oxida-tion of benzene over CuO/Ce1-xMnxO2 catalysts[J].Appl Catal B,2011,103(1-2):143.
[27]	Hong, W.-J.;Iwamoto, S.;Hosokawa, S.;Wada, K.;Kanai, H.;Inoue, M. .Effect of Mn content on physical properties of CeO_x-MnO_ y support and BaO-CeO_x-MnO_y catalysts for direct NO decomposition[J].Journal of Catalysis,2011(2):208-216.
[28]	P. Zimmer;A. Tschope;R. Birringer .Temperature-Programmed Reaction Spectroscopy of Ceria- and Cu/Ceria-Supported Oxide Catalyst[J].Journal of Catalysis,2002(2):339-345.
[29]	Dow WP.;Huang TJ.;Wang YP. .YTTRIA-STABILIZED ZIRCONIA SUPPORTED COPPER OXIDE CATALYST .1. EFFECT OF OXYGEN VACANCY OF SUPPORT ON COPPER OXIDE REDUCTION[J].Journal of Catalysis,1996(2):155-170.
[30]	Dow WP.;Huang TJ. .YTTRIA-STABILIZED ZIRCONIA SUPPORTED COPPER OXIDE CATALYST .2. EFFECT OF OXYGEN VACANCY OF SUPPORT ON CATALYTIC ACTIVITY FOR CO OXIDATION[J].Journal of Catalysis,1996(2):171-182.
[31]	Kapteijn F;Vanlangeveld A D;Moulijn J A;Andreini A Vuurman M A Turek A M Jehng J M Wachs I E .Alu-mina-supported manganese oxide catalysts:I characteri-zation:effect of precursor and loading[J].J Catal,1994,150(01):94.
[32]	Sun C Z;Zhu J;Lü Y Y;Qi L,Liu B,Gao F,Sun K Q,Dong L,Chen Y .Dispersion,reduction and catalytic per-formance of CuO supported on ZrO2-doped TiO2 for NO removal by CO[J].Appl Catal B,2011,103(1-2):206.
[33]	Liu L J;Liu B;Dong L H;Zhu J,Wan H Q,Sun K Q,Zhao B,Zhu H Y,Dong L,Chen Y .In situ FT-infrared investigation of CO or/and NO interaction with CuO/Ce0.67Zr0 33O2 catalysts[J].Appl Catal B,2009,90(3-4):578.
[34]	Hadjiivanov KI. .Identification of neutral and charged NxOy surface species by IR spectroscopy [Review][J].Catalysis Reviews. Science and Engineering,2000(1/2):71-144.
[35]	Qi L;Yu Q;Dai Y;Tang C J,Liu L J,Zhang H L,Gao F,Dong L,Chen Y .Influence of cerium precursors on the structure and reducibility of mesoporous CuO-CeO2 cata-lysts for CO oxidation[J].Appl Catal B,2012,119-120(0):308.
[36]	Hadjiivanov K I;Vayssilov G N .Characterization of oxide surfaces and zeolites by carbon monoxide as an IR probe molecule[J].ADVANCES IN CATALYSIS,2002,47:307.
[37]	Oh S H;Fisher G B;Carpenter J E;Goodman D W .Com-parative kinetic studies of CO-O2 and CO-NO reactions over single crystal and supported rhodium catalysts[J].J Catal,1986,100(02):360.
[38]	Li, D.;Yu, Q.;Li, S.-S.;Wan, H.-Q.;Liu, L.-J.;Qi, L.;Liu, B.;Gao, F.;Dong, L.;Chen, Y. .The remarkable enhancement of CO-pretreated CuO??Mn _2O_3/γ-Al_2O_3 supported catalyst for the reduction of NO with CO: The formation of surface synergetic oxygen vacancy[J].Chemistry: A European journal,2011(20):5668-5679.

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Influence of MnO2 modification methods on the catalytic performance of CuO/CeO2 for NO reduction by CO

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