| NiMgAl三元类水滑石的制备研究 |
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| 引用本文： | 谢鲜梅,刘洁翔,安霞,武正簧,王志忠.NiMgAl三元类水滑石的制备研究[J].燃料化学学报,2003,31(6):620-623. |
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| 作者姓名： | 谢鲜梅 刘洁翔 安霞 武正簧 王志忠 |
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| 作者单位： | College of Chemical Engineering & Technology, Taiyuan University of Technology, Taiyuan 030024, China |
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| 基金项目： | 山西省自然科学基金(20001015)~~ |
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| 摘 要： | 在Ni(NO3) 2-Mg(NO3) 2-Al(NO3) 3-NaOH体系中，研究了共沉淀法制备NiMgAl三元类水滑石的合成规律。考察了pH值、Ni/Mg/Al比、沉淀生成温度及水热处理条件对合成NiMgAl-HTLcs的影响，借助XRD 、ICP、 FT-IR对合成样品进行表征。实验结果表明，合成NiMgAl-HTLcs的适宜pH范围为5.5～7.0，Ni/Mg=2.0～4.0，水热处理条件为100 ℃，7 h。通过对合成物热行为研究表明，NiMgAl-HTLcs结构开始破坏温度为300 ℃，经焙烧后可得Ni元素高度分散的复合氧化物。
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| 关 键 词： | 类水滑石化合物 阴离子黏土 层状化合物 |
| 文章编号： | 0253-2409(2003)06-0620-04 |
| 收稿时间： | 2002-12-10 |
| 修稿时间： | 2002年12月10 |
STUDY ON THE SYNTHESIS OF NiMgAl HYDROTALCITE-LIKE COMPOUNDS |
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| XIE Xian-mei,LIU Jie-xiang,AN Xia,WU Zheng-huang,WANG Zhi-zhong.STUDY ON THE SYNTHESIS OF NiMgAl HYDROTALCITE-LIKE COMPOUNDS[J].Journal of Fuel Chemistry and Technology,2003,31(6):620-623. |
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| Authors: | XIE Xian-mei LIU Jie-xiang AN Xia WU Zheng-huang WANG Zhi-zhong |
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| Abstract: | The synthesis principal of NiMgAl hydrotalcite-like compounds by co-precipitation was studied in the system of Ni(NO3) 2-Mg(NO3) 2-Al(NO3) 3-NaOH. The effect of pH Ni/Mg ratios, co-preciptation temperature, time and temperature of hydrothermal treatment on the synthesis of NiMgAl-HTLCs were also investigated. The synthesized samples were characterized by using XRD, ICP, and FT-IR. Experimental results showed that unique NiMgAl-HTLcs with high crystallinity can be prepared by precipitation of solutions with M2+/M3+=2.0 and Ni/Mg=2.0～4.0 at pH=5.5～7.0, 100 ℃，7 h hydrothermal treatment. Study on the thermal stability of NiMgAl-HTLcs showed that the structure started to be destroyed at 3 00 ℃. |
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| Keywords: | hydrotalcite-like-compound anionic clay layered compound |
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