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An Efficient Method for the Production of Cyclohexylamine from Cyclohexanone and Ammonia over Cu-Cr-La/γ-Al2O3

대한화학회지 2015년 59권 6호 p.493 ~ 498
 ( Qin Shuanglin ) - Jiangxi Science and Technology Normal University School of Pharmacy

 ( Wang Pan ) - Tianjin University of Traditional Chinese Medicine First Teaching Hospital
 ( Huang Shuangping ) - Jiangxi Science and Technology Normal University School of Pharmacy
 ( Liu Shuai ) - Jiangxi Science and Technology Normal University School of Pharmacy
 ( Wang Gaopeng ) - Jiangxi Science and Technology Normal University School of Pharmacy
 ( Wang Liping ) - Jiangxi Science and Technology Normal University School of Pharmacy
 ( Sun Meng ) - Jiangxi Science and Technology Normal University School of Pharmacy
 ( Wang Xiaoji ) - Jiangxi Science and Technology Normal University School of Pharmacy

Abstract


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.

키워드

Reductive amination; Cyclohexylamine; Cyclohexanone; Cu-Cr-La/γ-Al2O3; Premixing process
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