| 超细Ce_(0.5)Zr_(0.5)O_2的制备及其催化甲烷燃烧性能研究; STUDY of ULTRAFINE CUBIC Ce_(0.5)Zr_(0.5)O_2 SOLID SOLUTION | |
| 缪建英 ; 陈笃慧 ; 杨乐夫 ; 蔡俊修 | |
| 1999 | |
| 关键词 | Ce_(0.5)Zr_(0.5)O_2固溶体 萤石结构 超细颗粒 甲烷燃烧 拉曼光谱 Ce0.5 Zr0.5 O2 solid solution structure of fluorite ultrafine powder combustion of methane Raman spectroscopy. |
| 英文摘要 | 以共沉淀法制备CE-zr-O固溶体,在液相反应阶段、干燥阶段和灼烧阶段分别采取快速喷射和加入表面活性剂、正丁醇共沸蒸馏脱水以及选择适当的灼烧温度等手段控制团聚体的生成.制得超细颗粒CE_(0.5)zr_(0.5)O_2固溶体.Xrd,TEM及比表面积等的测试结果表明,该催化剂是面心立方结构、较高比表面的超细颗粒.zr--(4+)掺杂较均匀的超细固溶体,其rAMAn光谱中晶格畸变带来的T_(2g)活性振动模式分裂谱峰较弱,说明晶体结构规整性较大.催化甲烷燃烧的活性测试结果也证实超细颗粒CE_(0.5)zr_(0.5)O_2固溶体的催化活性大于常规共沉淀法制备的催化剂.; Ce-Zr-O solid solution was prepared by coprecipitation with control of agglomeration.Ce4+ and Zr4+ mixed solution was spurted into the precipitant of surfactant added in the stage of reaction of liquid phase.After elimination of water by means of heterogeneous azeotropic distillation process with n-butanol,the powder was calcined at different temperatures.The result mixed oxide is face-centered cubic analyzed by XRD.The solid solutions are fiberlike ultrafine particles from TEM pictures.The super-micro particles have larger specific surface than the particles prepared by common coprecipitation.In the Raman spectra,splitting peaks of t2g active vibration mode resulted by distorted lattice are weaker than the samples prepared by common coprecipitation process.Raman spec-troscopic research show that the crystal structure of the ultrafine solid solution has better degree of order and Zr4+ ion enters into the lattice more even.Super-micro powder of Ce0.5Zr0.5O2 solid solution is more active to catalyze the combustion of methane than the catalyst synthesized by common coprecipitation method. |
| 语种 | zh_CN |
| 内容类型 | 期刊论文 |
| 源URL | [http://dspace.xmu.edu.cn/handle/2288/107651]  |
| 专题 | 化学化工－已发表论文 |
| 推荐引用方式 GB/T 7714 | 缪建英,陈笃慧,杨乐夫,等. 超细Ce_(0.5)Zr_(0.5)O_2的制备及其催化甲烷燃烧性能研究, STUDY of ULTRAFINE CUBIC Ce_(0.5)Zr_(0.5)O_2 SOLID SOLUTION[J],1999. |
| APA | 缪建英,陈笃慧,杨乐夫,&蔡俊修.(1999).超细Ce_(0.5)Zr_(0.5)O_2的制备及其催化甲烷燃烧性能研究.. |
| MLA | 缪建英,et al."超细Ce_(0.5)Zr_(0.5)O_2的制备及其催化甲烷燃烧性能研究".(1999). |
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