| 雷尼镍催化加氢制备3,4-二甲基苯胺 |
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| 引用本文： | 靖丹,曹亚峰,李沅,孟晨. 雷尼镍催化加氢制备3,4-二甲基苯胺[J]. 大连工业大学学报, 2012, 0(5): 339-341 |
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| 作者姓名： | 靖丹 曹亚峰 李沅 孟晨 |
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| 作者单位： | 大连工业大学轻工与化学工程学院 |
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| 摘 要： | 以3,4-二甲基硝基苯为原料,在雷尼镍催化剂作用下催化加氢制备3,4-二甲基苯胺,通过气相色谱分析3,4-二甲基苯胺的纯度。考察加氢压力、加氢溶剂、加氢温度、底物浓度、催化剂用量等因素对加氢反应的影响。结果表明,以乙醇为加氢溶剂,加氢压力0.8 MPa、温度60℃、3,4-二甲基硝基苯初始浓度1.25mol/L、催化剂质量为3,4-二甲基硝基苯质量的5%时,3,4-二甲基硝基苯转化率和3,4-二甲基苯胺收率和3,4-二甲基苯胺纯度均达100%。
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| 关 键 词： | 雷尼镍 3,4-二甲基硝基苯 3,4-二甲基苯胺 催化加氢 |
Preparation of 3,4-dimethylaniline by Raney nickel catalyst |
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| JING Dan,CAO Ya-feng,LI Yuan,MENG Chen. Preparation of 3,4-dimethylaniline by Raney nickel catalyst[J]. Journal of Dalian Dalian Polytechnic University, 2012, 0(5): 339-341 |
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| Authors: | JING Dan CAO Ya-feng LI Yuan MENG Chen |
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| Affiliation: | School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China |
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| Abstract: | 3,4-dimethylaniline was prepared by catalytic hydrogenation with Raney nickel catalyst using 3,4-dimethylnitrobenzene as staring substrate.Effects of hydrogenation have been investigated in the optimized conditions: w(catalyst/substrate)=5% in ethanol,initial concentration of the substrate=1.25 mol/L,60 ℃ and 0.8 MPa.Both reactant conversion and the purity of 3,4-dimethylaniline can be up to 100%. |
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| Keywords: | Raney nickel catalyst 3,4-dimethylnitrobenzene 3,4-dimethylaniline catalytic hydrogenation |
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