采用溶胶凝胶法和微波技术制备了Ce1-xEuxOy固溶体,以甲烷催化燃烧为探针反应及XRD,BET和TPR对催化剂进行了表征.结果表明,CeO2和Eu2O3相互作用形成了立方相的Ce1-xEuxOy固溶体,随着Eu含量的增加,Ce1-xEuxOy固溶体的晶胞参数变大,实验测定值和计算值基本一致.Ce1-xEuxOy固溶体的甲烷催化燃烧活性和抗烧结性能高于单组分CeO2,且随着x的变化而不同,其中以Ce0.5Eu0.5Oy固溶体的活性最高.Ce1-xEuxOy固溶体催化剂活性提高的主要原因是降低了反应的活化能.
参考文献
| [1] | Joo H. Lee;David L. Trimm .Catalytic combustion of methane[J].Fuel Processing Technology,1995(2/3):339-359. |
| [2] | Marcusf F M;Zwinkels;Seven G Jaras et al.Catalytic material for high-temperature combustion[J].Catalysis Review-Science and Engineering,1993,35(03):319. |
| [3] | Eleseo Ranzi;Angelo Sogaro;Paolo Gaffari et al.A wide range modeling study of methane oxidation[J].Combustion Science and Technology,1994,96(4-6):279. |
| [4] | 林缨,黎维彬,张雨.在钴、锰负载型催化剂上甲烷的催化氧化[J].燃料化学学报,2002(01):83-85. |
| [5] | ZrO2载体上Pd、Ag、Co催化剂用于甲烷完全氧化反应的研究[J].燃料化学学报,2000(01):24-27. |
| [6] | Palmqvist AEC.;Jaras SG.;Muhammed M.;Johansson EM. .Total oxidation of methane over doped nanophase cerium oxides[J].Catalysis Letters,1998(1):69-75. |
| [7] | 楼莉萍,蒋晓原,陈英旭,吕光烈,周仁贤,郑小明.CexTi1-xO2复合氧化物的结构及负载CuO对NO还原性能研究[J].中国稀土学报,2003(04):435-440. |
| [8] | 赵雷洪,刘广宇,罗孟飞,胡王成,林瑞.CexTh1-xO2固溶体的制备和表征[J].中国稀土学报,2004(02):288-291. |
| [9] | Luo M F;Chen J;Chen L S .Structure and redox properties of CexTi1-xO2 solid solution[J].CHEMISTRY OF MATERIALS,2001,13:197. |
| [10] | Rodriguez J A;Hanson J C;Kim J Y .Properties of CeO2 and Ce1-xZrxO2 nanoparticles:X-ray absorption near-edge spectroscopy,density functional,and time-resolved X-ray diffraction studies[J].Journal of Physical Chemistry B,2003,107:3535. |
| [11] | 冯长根,张江山,王亚军.铈锆氧化物纳米粉的合成及催化性能研究[J].中国稀土学报,2004(04):551-556. |
| [12] | 林晓敏,宋文福,李莉萍,苏文辉.Ce1-xEuxO2-δ（x=0.05～0.50）固溶体的溶胶-凝胶法合成与性质研究[J].化学学报,2004(10):951-955. |
| [13] | Shuk P;Greenblatt M;Crft M J .Hydrothrmal synthesis and properties of Ce1-xEuxO2-δ solid solutions[J].Journal of Alloys and Compounds,2000,465:303. |
| [14] | Kim D J .The reaction of itaconic acid with primary amines[J].Journal of the American Ceramic Society,1989,72:1415. |
| [15] | Arai H;Machida M .Thermal stabilization of catalyst supports and their application to high-temperature catalytic combustion[J].Applied Catalysis,1996,138(02):161. |
| [16] | Otto K;Andino J M;Parks C L .The influence of platinum concentration and particle size on the kinetics of propane oxidation over Pt/r-alumina[J].Journal of Catalysis,1991,131(01):243. |
| [17] | Saracco G;Geobaldo F;Baldi G .Methane combustion on Mg-doped LaMnO3 perovskie catalysts[J].Applied Catalysis B:Environmental,1999,20(04):277. |
| [18] | Stojanovic M.;Moudallal H.;Yang YL.;Jacobson AJ.;Mims CA. .REACTION KINETICS OF METHANE OXIDATION OVER LACR1-XNIXO3 PEROVSKITE CATALYSTS[J].Journal of Catalysis,1997(2):324-332. |
| [19] | V.C.Belessi;A.K.Ladavos;P.J.Pomonis .Methane combustion on La-Sr-Ce-Fe-O mixed oxides:bifunctional synergistic action of SrFeO_(3-x)and CeO_x phases[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2001(3):183-194. |
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