| Mg-Zn-Al三金属类水滑石的合成及其复合氧化物的催化性能 |
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| 引用本文： | 葛云红,陆维敏,毛建新.Mg-Zn-Al三金属类水滑石的合成及其复合氧化物的催化性能[J].无机化学学报,2002,18(11):1143-1146. |
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| 作者姓名： | 葛云红 陆维敏 毛建新 |
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| 作者单位： | 浙江大学西溪校区催化研究所,杭州,310028 |
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| 摘 要： | 水滑石（Mg_６Al_２（OH）_(１６)CO_３·４H_２O）是一种类似于水镁石结构的层状阴离子黏土，其骨架为阳离子，层间为阴离子。如改变骨架中的金属阳离子或在层间引入不同的阴离子，就可形成各种新组成的类水滑石。水滑石对有机分子反应具有较高的催化活性和选择性，且可以作为复合氧化物催化剂的前体，应用广泛。它作为碱催化剂，可用于醇醛缩合；作为氧化还原催化剂，用于水煤气转化、NO的还原、甲烷氧化反应等犤１，２犦。作为一种具有特殊结构的化合物，各种双金属组分的水滑石或类水滑石的合成、性质与应用已受到广泛的重视犤３…
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| 关 键 词： | 类水滑石 异丙醇 CO2-TPD 脱氢 |
| 修稿时间： | 2002年6月6日 |
Synthesis of Mg-Zn-Al Hydrotalcites-Like and Catalytic Activities of their Composite Oxides |
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| GE Yun-Hong,LU Wei-Min and MAO Jian-Xin.Synthesis of Mg-Zn-Al Hydrotalcites-Like and Catalytic Activities of their Composite Oxides[J].Chinese Journal of Inorganic Chemistry,2002,18(11):1143-1146. |
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| Authors: | GE Yun-Hong LU Wei-Min and MAO Jian-Xin |
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| Institution: | Institute of Catalysis,Xixi Campus,Zhejiang University, Hangzhou 310028,Institute of Catalysis,Xixi Campus,Zhejiang University, Hangzhou 310028 and Institute of Catalysis,Xixi Campus,Zhejiang University, Hangzhou 310028 |
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| Abstract: | A series of Mg-Zn-Al hydrotalcites-like with different Mg/Zn molar ratios are synthesized by co-precipitation method and characterized by XRD. The reactions of dehydrogenation or dehydration of isopropanol are carried out using the Mg-Zn-Al mixed oxides obtained from calcination of Mg-Zn-Al hydrotalcites-like. All of the Mg-Zn-Al mixed oxides show high catalytic activity on isopropanol dehydrogenation reaction. The acetone selectivity achieves more than 95%. The relation between catalytic activity and basicity of the catalysts is discussed by CO2-TPD technique. |
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| Keywords: | hydrotalcites-like isopropanol CO2-TPD dehydrogenation |
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