| 结晶碳酸钕的水热合成、外观形貌及其组成 |
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| 引用本文： | 吴燕利,孙伟丽,冯晓平,徐欣,李永绣.结晶碳酸钕的水热合成、外观形貌及其组成[J].无机化学学报,2007,23(3):550-554. |
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| 作者姓名： | 吴燕利 孙伟丽 冯晓平 徐欣 李永绣 |
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| 作者单位： | 1. 南昌大学稀土与微纳功能材料研究中心,南昌,330047;江西省有机功能分子重点实验室,江西科技师范学院,南昌,330013
2. 南昌大学稀土与微纳功能材料研究中心,南昌,330047 |
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| 基金项目： | 国家自然科学基金;江西省教育厅资助项目 |
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| 摘 要： | Crystalline neodymium carbonates were prepared by treating the amorphous precipitate formed from the reaction between neodymium chloride and ammonium bicarbonate under hydrothermal condition. Their composition, morphology and crystal phase were identified by means of elemental analysis, SEM and XRD. It was found that Nd2(CO3)3·2.5H2O with tengerite-type structure and sheet morphology was obtained when the feed molar ratio(FMR=n(NH4)2CO2/nNdCl3)was 2 or 1.8 and hydrothermally treated at 150 ℃ for 12h. However, orthogonal NdOHCO3 particles agglomerated with long rod crystals were formed when lowering FMR to 1.5 under the same hydrothermal condition. Phase transformation from tengerite-type Nd2(CO3)3·2.5H2O to orthogonal NdOHCO3 was occurred when increasing hydrothermal temperature or prolonging hydrothermal time, which is beneficial to the preparation of neodymium hydroxyl-carbonate with neodymium oxide content higher than 70%.
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| 关 键 词： | 水热结晶 碳酸钕 碱式碳酸钕 |
| 文章编号： | 1001-4861(2007)03-0550-05 |
| 修稿时间： | 2006-11-10 |
Hydrothermal Synthesis, Composition and Morphology of Crystalline Neodymium Carbonate |
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| WU Yan-Li,SUN Wei-Li,FENG Xiao-Ping,XU Xin and LI Yong-Xiu.Hydrothermal Synthesis, Composition and Morphology of Crystalline Neodymium Carbonate[J].Chinese Journal of Inorganic Chemistry,2007,23(3):550-554. |
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| Authors: | WU Yan-Li SUN Wei-Li FENG Xiao-Ping XU Xin and LI Yong-Xiu |
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| Institution: | Research Center for Rare Earths & Nano/micro Functional Materials, Nanchang University, Nanchang 330047;Jiangxi Key Laboratory of Organic Functional Molecules, Jiangxi Science and Technology Normal College, Nanchang 330013,Research Center for Rare Earths & Nano/micro Functional Materials, Nanchang University, Nanchang 330047,Research Center for Rare Earths & Nano/micro Functional Materials, Nanchang University, Nanchang 330047,Research Center for Rare Earths & Nano/micro Functional Materials, Nanchang University, Nanchang 330047 and Research Center for Rare Earths & Nano/micro Functional Materials, Nanchang University, Nanchang 330047 |
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| Abstract: | |
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| Keywords: | hydrothermal crystallization neodymium carbonate neodymium hydroxyl-carbonate |
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