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| 立方介孔相含钕氧化硅的合成与表征 | |
| 引用本文： | 姜文清,刘 玲,张喜燕,吴 迪,戴乐蓉,杨喜昆,王彤文. 立方介孔相含钕氧化硅的合成与表征[J]. 无机化学学报, 2004, 20(12): 1407-1412 |
| 作者姓名： | 姜文清 刘 玲 张喜燕 吴 迪 戴乐蓉 杨喜昆 王彤文 |
| 作者单位： | 1. 云南师范大学化学化工学院,昆明,650092 2. 北京大学化学与分子工程学院,北京,100871 3. 云南省分析测试研究所,昆明,650051 |
| 基金项目： | 国家自然科学基金资助项目(No.20163002)，云南省自然科学基金重点项目(No.2003E0005Z) |
| 摘 要： | 以十六烷基三甲基溴化铵为结构导向剂，通过水热法合成了具有立方结构的含钕Nd-MCM-48介孔分子筛材料。XRD和TEM测试表明当nNd/nSi<0.05时可以获得典型的长程有序介孔立方结构相，随nNd/nSi比的增加，晶胞参数的增大和红外吸收光谱(FT-IR)的变化为Nd进入介孔分子筛骨架中提供了有力证据。N2吸附-脱附实验给出了其BET表面积为1 195 m2·g-1，BJH平均孔径为3.6 nm。紫外-可见漫反射光谱(UV-Vis)证明钕氧形成一种八面体结构。X射线光电子能谱(XPS)进一步证明钕主要以三价形式存在于立方介孔分子筛骨架中。 |
| 关 键 词： | 立方介孔相 含钕氧化硅 合成 表征 |
| 修稿时间： | 2004-06-08 |
Synthesis and Characterization of Cubic Mesoporous Neodymium-containing Silica |
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| JIANG Wen-Qing,LIU Ling,ZHANG Xi-Yan,WU Di,DAI Le-Rong,YANG Xi-Kun and WANG Tong-Wen. Synthesis and Characterization of Cubic Mesoporous Neodymium-containing Silica[J]. Chinese Journal of Inorganic Chemistry, 2004, 20(12): 1407-1412 | |
| Authors: | JIANG Wen-Qing LIU Ling ZHANG Xi-Yan WU Di DAI Le-Rong YANG Xi-Kun WANG Tong-Wen |
| Affiliation: | Department of Chemistry, Yunnan Normal University, Kunming 650092,Department of Chemistry, Yunnan Normal University, Kunming 650092,Department of Chemistry, Yunnan Normal University, Kunming 650092,Department of Chemistry, Yunnan Normal University, Kunming 650092,College of Chemistry and Molecular Engineering, Peking University, Beijing 100871,Yunnan Province Analysis & Testing Research Institute, Kunming 650051 and Department of Chemistry, Yunnan Normal University, Kunming 650092 |
| Abstract: | The cubic neodymium-modified MCM-48 molecular sieves were synthesized via a hydrothermal method using cethyltrimethylammonium bromide as template. The X-ray diffraction and TEM indicate a well-ordered cubic mesoporous structure was obtained when the Nd/Si molar ration was less than 0.05. With the increase of Nd/Si molar ration, the increase of unit cell parameters and the change of FT-IR provide powerful evidences for the incorporation of neodymium in the framework of mesoporous molecular sieves. Nitrogen adsorption-desorption suggests the BET surface area is 1 195 m2·g-1 and that the average pore diameter is 3.6 nm. Diffuse reflectance UV-Visible (UV-Vis) spectroscopy confirms the presence of neodymium in the octahedral position. X-ray photoelectron spectroscopy (XPS) studies further reveal that most of neodymium is trivalent in the framework of mesoporous molecular sieves. |
| Keywords: | cubic mesophase neodymium-containing silica synthesis characterization |
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