Promotional effects of samarium on Co3O4 spinel for CO and CH4 oxidation

稀土学报(英文版), 2014, (2): 159-169. doi: 10.1016/S1002-0721(14)60046-6

徐香兰 ^1, , 韩红 ^2, , 刘建军 ^3, , 刘文明 ^4, , 李文龙 ^5, , 王翔 ^6,

1.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

2.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

3.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

4.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

5.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

6.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

基金项目: National Natural Science Foundation of China(21263015,21203088) Education Department of Jiangxi Province(GJJ12045)

Promotional effects of samarium on Co3O4 spinel for CO and CH4 oxidation

XU Xianglan ^1, , HAN Hong ^2, , LIU Jianjun ^3, , LIU Wenming ^4, , LI Wenlong ^5, , WANG Xiang ^6,

1.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

2.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

3.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

4.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

5.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

6.Institute of Applied Chemistry, Department of Chemistry, Nanchang University, Nanchang 330031, China

Keywords： Co3O4

A series of Co3O4 spinel catalysts modified by Sm were prepared by co-precipitation method and tested for CH4 and CO oxidation. The addition of a small amount of Sm into Co3O4 led to an improvement in the catalytic activity for both reactions. Co0.98Sm0.02 and Co0.95Sm0.05, the two samples with Co/Sm molar ratio of 0.98/0.02 and 0.95/0.05 in sequence, showed the similar and the highest activity for CH4 oxidation, with CH4 complete conversion at 450 oC. In contrast, Co0.90Sm0.10 was the most active sample for CO oxidation, with CO complete conversion at 120 oC. The catalysts were characterized by techniques of N2 adsor-tion-desorption with Brunauer-Emmett-Teller technique (N2-BET), X-ray powder diffraction (XRD), thermal gravity analy-sis-differential scanning calorimetry (TGA-DSC), H2 temperature programmed reduction (H2-TPR) and X-ray photoelectron spec-troscopy analysis (XPS). Compared with pure Co3O4, for Co1-xSmx catalysts with 0.02≤x≤0.10, the addition of a small amount of Sm resulted in the formation of spinel Co3O4 and amorphous SmCoO3, hence increasing the number of Co3+and the active surface oxygen species, which was responsible for the improvement of the activity. Co0.95Sm0.05 catalyst showed not only high thermal stability and activity but also good reaction durability in the presence of 5%water vapor for CH4 oxidation.

参考文献

[1]	Choi S D;Min B K .Co3O4-based isobutane sensor operat-ing at low temperatures[J].Sensors and Actuators B-Chemical,2001,77(1-2):330.
[2]	Miao S J;Deng Y Q .Au-Pt/Co3O4 catalyst for methane combustion[J].Appl Catal B,2001,31(03):L1.
[3]	McCarty J;Chang Y-F;Wong V;Johansson E .Kinetics of high temperature methane combustion by metal oxide catalysts[J].Div Petrol Chem,1997,42(01):158.
[4]	Ma, CY;Mu, Z;Li, JJ;Jin, YG;Cheng, J;Lu, GQ;Hao, ZP;Qiao, SZ .Mesoporous Co3O4 and Au/Co3O4 Catalysts for Low-Temperature Oxidation of Trace Ethylene[J].Journal of the American Chemical Society,2010(8):2608-2613.
[5]	Xiaowei Xie;Yong Li;Zhi-Quan Liu;Masatake Haruta;Wenjie Shen .Low-temperature Oxidation Of Co Catalysed By Co3o4 Nanorods[J].Nature,2009(7239):746-749.
[6]	Park P W;Kil J K;Kung H H;Kung M C .NO decomposi-tion over sodium-promoted cobalt oxide[J].Catalysis Today,1998,42(1-2):51.
[7]	Haneda M;Kintaichi Y;Hamada H .Reaction mechanism of NO decomposition over alkali metal-doped cobalt oxide catalysts[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2005(3):169-175.
[8]	Haneda M;Kintaichi Y;Bion N;Hamada H .Alkali metal-doped cobalt oxide catalysts for NO decomposition[J].Appl Catal B,2003,46(03):473.
[9]	Pawel Stelmachowski;Gabriela Maniak;Andrzej Kotarba .Strong electronic promotion of Co3O4 towards N2O decomposition by surface alkali dopants[J].Catalysis Communications,2009(7):1062-1065.
[10]	Chie OhnishioKimihiro Asano;Shinji Iwamoto .Alkali-doped Co_3O_4 catalysts for direct decomposition of N_2O in the presence of oxygen[J].Catalysis Today,2007(2):145-150.
[11]	Asano K;Ohnishi C;Iwamoto S;Shioya Y,Inoue M .Po-tassium-doped Co3O4 catalyst for direct decomposition of N2O[J].Appl Catal B,2008,78:242.
[12]	Yan L;Ren T;Wang X L;Ji D,Suo J H .Catalytic de-composition of N2O over MxCo1-xCo2O4(M=Ni,Mg)spinel oxides[J].Appl Catal B,2003,45:85.
[13]	Yan L;Ren T;Wang X L;Gao Q Ji D Suo J H .Excellent catalytic performance of ZnxCo1-xCo2O4 spinel catalysts for the decomposition of nitrous oxide[J].CATALYSIS COMMUNICATIONS,2003,4:505.
[14]	薛莉,贺泓.Co-M（M=La,Ce,Fe,Mn,Cu,Cr）复合金属氧化物催化分解N2O[J].物理化学学报,2007(05):664-670.
[15]	Xue L;Zhang C B;He H,Teraoka Y .Catalytic decompo-sition of N2O over CeO2 promoted Co3O4 spinel catalyst[J].Appl Catal B,2007,75(3-4):167.
[16]	Hou X D;Wang Y Z;Zhao Y X .Effect of CeO2 doping on structure and catalytic performance of Co3O4 catalyst for low-temperature CO oxidation[J].Catalysis Letters,2008,123(3-4):321.
[17]	Lago R.;Pena MA.;Fierro JLG.;Bini G. .PARTIAL OXIDATION OF METHANE TO SYNTHESIS GAS USING LNCOO(3) PEROVSKITES AS CATALYST PRECURSORS[J].Journal of Catalysis,1997(1):198-209.
[18]	Alifanti M;Bueno G;Parvulescu V;Parvulescu V I Cor-beran V C .Oxidation of ethane on high specific surface SmCoO3 and PrCoO3 perovskites[J].Catalysis Today,2009,143(3-4):309.
[19]	Todorova S;Kadinov G;Tenchev K;Caballero A Hol-gado J P Pereniguez R .Co3O4+CeO2/SiO2 catalysts for n-Hexane and CO oxidation[J].Catalysis Letters,2009,129(1-2):149.
[20]	Cunningham D A H;Kobayashi T;Kamijo N;Haruta M .Influence of dry operating conditions:observation of os-cillations and low temperature CO oxidation over Co3O4 and Au/Co3O4 catalysts[J].Catalysis Letters,1994,25(03):257.
[21]	Thorm?hlen P;Fridell E;Cruise N;Skoglundh M,Palm-qvist A .The influence of CO2,C3H6,NO,H2,H2O or SO2 on the low-temperature oxidation of CO on a co-balt-aluminate spinel catalyst(Co1.66Al1 34O4)[J].Appl Catal B,2001,31(01):1.
[22]	Grillo F;Natile M M;Glisenti A .Low temperature oxida-tion of carbon monoxide:the influence of water and oxy-gen on the reactivity of a Co3O4 powder surface[J].Appl Catal B,2004,48(04):267.
[23]	Kadowaki Y.;Aika K. .PROMOTER EFFECT OF SM2O3 ON RU/AL2O3 IN AMMONIA SYNTHESIS[J].Journal of Catalysis,1996(1):178-185.
[24]	Imamura S;Fukuda K;Nishida T;Inui T .Effect of Sm on the catalytic activity of Co3O4 in the oxidation of toluene[J].Journal of Catalysis,1985,93(01):186.
[25]	Rongbin Zhang;Jinyan Shang;Xianrong Zeng .SnO2 Promoted by Praseodymia: Novel Catalysts for CO Oxidation[J].Zeitschrift fur Physikalische Chemie: International Journal of Research in Physical Chemistry and Chemical Physics,2012(4):275-290.
[26]	Jansson J.;Palmqvist AEC.;Fridell E.;Skoglundh M.;Osterlund L. Thormahlen P.;Langer V. .On the catalytic activity of Co3O4 in low-temperature CO oxidation[J].Journal of Catalysis,2002(2):387-397.
[27]	Jansson J;Skoglundh M;Fridell E;Thorm?hlen P .A mecha-nistic study of low temperature CO oxidation over cobalt oxide[J].Top Catal,2001,16-17(1-4):385.
[28]	Xingfu TANG,Jiming HAO,Junbua LI.Complete oxidation of methane on Co3O4-SnO2 catalysts[J].中国高等学校学术文摘·环境科学与工程,2009(03):265-270.
[29]	Patil K;Chandrashekhar G;George M V;Rao C N R .In-frared spectra and thermal decompositions of metal ace-tates and dicarboxylates[J].Canadian Journal of Chemistry,1968,46(02):257.
[30]	Lai T L;Lai Y L;Lee C C;Shu Y Y Wang C B .Micro-wave-assisted rapid fabrication of Co3O4 nanorods and ap-plication to the degradation of phenol[J].Catalysis Today,2008,131(1-4):105.
[31]	Hussein GAM.;Buttrey DJ.;DeSanto P.;Abd-Elgaber AA.;Roshdy H.;Myhoub AYZ. .Formation and characterization of samarium oxide generated from different precursors[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2003(1/2):27-36.
[32]	De-en Jiang;Sheng Dai .The role of low-coordinate oxygen on Co3O4(110) in catalytic CO oxidation[J].Physical chemistry chemical physics: PCCP,2011(3):978-984.
[33]	Kang M;Song M W;Lee C H .Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts[J].Appl Catal A,2003,251(01):143.
[34]	Garbowski E;Guenin M;Marion M-C;Primet M .Cata-lytic properties and surface states of cobalt-containing oxidation catalysts[J].Applied Catalysis,1990,64(0):209.
[35]	Pietrogiacomi D;Tuti S;Campa M C;Indovina V .Cobalt supported on ZrO2:catalysts characterization and their ac-tivity for the reduction of NO with C3H6 in the presence of excess O2[J].Appl Catal B,2000,28(01):43.
[36]	Xu X L;Li J Q .DFT studies on H2O adsorption and its ef-fect on CO oxidation over spinel Co3O4(110)surface[J].Surface Science,2011,605(23-24):1962.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

Promotional effects of samarium on Co3O4 spinel for CO and CH4 oxidation

参考文献