欢迎登录材料期刊网

材料期刊网

高级检索

制备了一系列CO低温氧化的Ce20Cu5NiyOx催化剂,并采用氮气低温物理吸附、X射线衍射、程序升温还原、X射线光电子能谱以及拉曼光谱等手段对催化剂进行表征.结果表明,Ce20Cu5Ni0.4Ox催化剂活性最高.NiO的添加可以使得较多的Cu物种掺杂到CeO2晶格中,通过形成铈镍固溶体产生更多的氧空位.表征结果显示,Ce20Cu5Ni0.4Ox催化剂中存在大量的Cu+,Ce3+及晶格氧,催化剂中的Cu+很容易进入到氧化铈晶格,形成Cu-O-Ce固溶体,从而增强了在还原气氛下晶格氧的释放能力.Ce20Cu5Ni0.4Ox催化剂高的催化活性主要归因于大量Cu+以及形成的Cu-O-Ce和Ni-O-Ce固溶体.

参考文献

[1] Liu W.;Flytzanistephanopoulos M. .TOTAL OXIDATION OF CARBON MONOXIDE AND METHANE OVER TRANSITION METAL-FLUORITE OXIDE COMPOSITE CATALYSTS .1. CATALYST COMPOSITION AND ACTIVITY[J].Journal of Catalysis,1995(2):304-316.
[2] Zheng XC;Zhang XL;Wang XY;Wang SR;Wu SH .Preparation and characterization of CuO/CeO2 catalysts and their applications in low-temperature CO oxidation[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2005(2):142-149.
[3] Luo MF;Ma JM;Lu JQ;Song YP;Wang YJ .High-surface area CuO-CeO2 catalysts prepared by a surfactant-templated method for low-temperature CO oxidation[J].Journal of Catalysis,2007(1):52-59.
[4] Hoflund G B;Gardner S D;Schryer D R;Upchurch B T Kielin E J .[J].Applied Catalysis B:Environmental,1995,6:117.
[5] Gokhale AA;Dumesic JA;Mavrikakis M .On the mechanism of low-temperature water gas shift reaction on copper[J].Journal of the American Chemical Society,2008(4):1402-1414.
[6] Wang L L;Yang L M;Zhang Y H;Ding W Chen S P Fang W P Yang Y Q .[J].FUEL PROCESSING TECHNOLOGY,2010,91:723.
[7] Sedmak G;Hocevar S;Levec J .[J].Journal of Catalysis,2003,213:135.
[8] Wang J B;Tsai D H;Huang T J .[J].Journal of Catalysis,2002,208:370.
[9] Ayastuy J L;Gurbani A;González-Marcos M P;Gutiérrez-Ortiz M A .[J].Industrial and Engineering Chemistry Research,2009,48:5633.
[10] 张慧丽,任丽会,陆安慧,李文翠.Au/CeO2/SiO2催化CO低温氧化反应过程中CeO2的作用[J].催化学报,2012(07):1125-1132.
[11] Benjaram M R;Gode Thrimurthulu;Katta Lakshmi .[J].Chinese Journal of Catalysis,2011,32:800.
[12] Li Q L;Zhang Y H;Chen G X;Fan J Q Lan H Q Yang Y Q .[J].Journal of Catalysis,2010,273:167.
[13] Dobrosz-Gómez I;Kocemba I;Rynkowski J M .[J].Applied Catalysis B:Environmental,2008,83:240.
[14] Jiang X Y;Zhou R X;Pan P;Zhu B Yuan X X Zheng X M .[J].Applied Catalysis A:General,1997,150:131.
[15] Liu Y;Fu Q;Stephanopoulos M F .[J].Catalysis Today,2004,93-95:241.
[16] Sk(a)rman B;Grandjean D;Benfield R E;Hinz A Anderson A Wallenberg L R .[J].Journal of Catalysis,2002,211:119.
[17] Marbán G;Fuertes A B .[J].Applied Catalysis B:Environmental,2005,57:43.
[18] Kim D H;Cha J E .[J].Catalysis Letters,2003,86:107.
[19] Tang X L;Zhang B C;Li Y;Xu Y D Xin Q Shen W J .[J].Catalysis Today,2004,93-95:191.
[20] Skarman B.;Nakayama T.;Grandjean D.;Benfield RE.;Olsson E.;Niihara K. Wallenberg LR. .Morphology and structure of CuOx/CeO2 nanocomposite catalysts produced by inert gas condensation: An HREM, EFTEM, XPS, and high-energy diffraction study[J].Chemistry of Materials,2002(9):3686-3699.
[21] Zhang R D;Teoh W Y;Amal R;Chen B H Kaliaguine S .[J].Journal of Catalysis,2010,272:210.
[22] Zhang Z L;Zhang Y X;Mu Z G;Yu P F Ni X Z Wang S L Zhang L S .[J].Applied Catalysis B:Environmental,2007,76:335.
[23] Fornasiero P;Fonda E;Di Monte R;Vlaic G Kaspar J Graziani M .[J].Journal of Catalysis,1999,187:177.
[24] Kruk M;Jaroniec M .[J].CHEMISTRY OF MATERIALS,2001,13:3169.
[25] Dow W;Wang Y;Huang T .[J].Applied Catalysis A:General,2000,190:25.
[26] Martínez-Arias A;Catalu(n)a R;Conesa J C;Soria J .[J].Journal of Physical Chemistry B,1998,102:809.
[27] Spanier J E;Robinson R D;Zhang F;Chan S W Herman I P .[J].Physical Review B:Condensed Matter,2001,64:245407.
[28] Shan WJ;Feng ZC;Li ZL;Jing Z;Shen WJ;Can L .Oxidative steam reforming of methanol on Ce0.9Cu0.1OY catalysts prepared by deposition-precipitation, coprecipitation, and complexation-combustion methods[J].Journal of Catalysis,2004(1):206-217.
[29] Bera P.;Priolkar KR.;Sarode PR.;Hegde MS.;Emura S.;Kumashiro R. Lalla NP. .Structural investigation of combustion synthesized Cu/CeO2 catalysts by EXAFS and other physical techniques: Formation of a Ce1-xCuxO2-delta solid solution[J].Chemistry of Materials,2002(8):3591-3601.
[30] Liu W H;Li D;Sun K;Li Y S Fu Z W .[J].Solid State Sciences,2009,11:982.
[31] Martínez-Arias A;Gamarra D;Fernández-García M;Wang X Hanson J Rodriguez J .[J].Journal of Catalysis,2006,240:1.
[32] McBride J R;Hass K C;Poindexter B D;Weber W H .[J].Journal of Applied Physics,1994,76:2435.
[33] Yashima M;Arashi H;Kakihana M;Yoshimura M .[J].Journal of the American Ceramic Society,1994,77:1067.
[34] Wang X;Rodríguez J A;Hanson J C;Gamarra D Martínez-Arias A Fernández-García M .[J].Journal of Physical Chemistry B,2005,109:19595.
[35] Avgouropoulos G;loannides T .[J].Applied Catalysis A:General,2003,2 44:155.
[36] Tsch(o)pe A;Trudeau M L;Ying J Y .[J].Journal of Physical Chemistry B,1999,103:8858.
[37] Dai WL.;Deng JF.;Wu D.;Sun YH.;Sun Q. .XPS studies of Cu/ZnO/Al2O3 ultra-fine catalysts derived by a novel gel oxalate co-precipitation for methanol synthesis by CO2+H-2[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2001(3):172-179.
[38] Vepǐek S;Cocke D L;Kehl S;Oswald H R .[J].Journal of Catalysis,1986,100:250.
[39] Ghijsen J;Tjeng L H;van Elp J;Eskes H Westerink J Sawatzky G A Czyzyk M T .[J].Physical Review B:Condensed Matter,1998,38:11322.
[40] Moretti E;Lenarda M;Storaro L;Talon A;Frattini R;Polizzi S;Rodriguez-Castellon E;Jimenez-Lopez A .Catalytic purification of hydrogen streams by PROX on Cu supported on an organized mesoporous ceria-modified alumina[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2007(1/2):149-156.
[41] Nelson AE.;Schulz KH. .Surface chemistry and microstructural analysis of CexZr1-xO2-y model catalyst surfaces[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2003(3/4):206-221.
[42] Polster, C.S.;Nair, H.;Baertsch, C.D. .Study of active sites and mechanism responsible for highly selective CO oxidation in H_2 rich atmospheres on a mixed Cu and Ce oxide catalyst[J].Journal of Catalysis,2009(2):308-319.
[43] Avgouropoulos G;Ioannides T .Effect of synthesis parameters on catalytic properties of CuO-CeO2[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2006(1/2):1-11.
[44] Hocevar S;Batista J;Levec J .[J].Journal of Catalysis,1999,184:39.
[45] Sirichaiprasert K;Luengnaruemitchai A;Pongstabodee S .[J].International Journal of Hydrogen Energy,2007,32:915.
[46] Park J W;Jeong J H;Yoon W L;Jung H Lee H T Lee D K Park Y K Rhee Y W .[J].Applied Catalysis A:General,2004,274:25.
[47] Li J;Zhu P F;Zuo S F;Huang Q Q Zhou R X .[J].Applied Catalysis A:General,2010,381:261.
[48] Liu W;Flytzani-Stephanopoulos M .[J].CHEMICAL ENGINEERING JOURNAL,1996,64:283.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%