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KMID : 1059520150590060493
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Journal of the Korean Chemical Society
2015 Volume.59 No. 6 p.493 ~ p.498
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An Efficient Method for the Production of Cyclohexylamine from Cyclohexanone and Ammonia over Cu-Cr-La/γ-Al2O3
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Qin Shuanglin
Wang Pan
Huang Shuangping
Liu Shuai
Wang Gaopeng
Wang Liping
Sun Meng
Wang Xiaoji
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Abstract
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The reductive amination of cyclohexanone with ammonia over Cu-Cr-La/γ-Al2O3 was investigated. It was found that a proper solvent with high solubility of ammonia and 4A molecular sieves for the elimination of generated water contributed to the formation of cyclohexylamine in the premixing process. In addition, the addition of ammonia in the fixedbed reactor could obviously improve the conversion of cyclohexanone to cyclohexylamine. Finally, reaction conditions including reaction temperature, hydrogen pressure and charging rate of the premix were optimized. Under the optimized conditions, cyclohexylamine was obtained in 83.06% yield.
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KEYWORD
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Reductive amination, Cyclohexylamine, Cyclohexanone, Cu-Cr-La/γ-Al2O3, Premixing process
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