The reductive amination of cyclohexanone with 1,6-diaminohexane over alumina B modified Cu-Cr-La/纬-Al₂O₃

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• 作者：Meng Sun^a ; Xiaobao Du^a ; Xiangjin Kong^b ; Liang Lu^a ; Yang Li^a ; Ligong Chen^a ;
• 关键词：Reductive amination ; Cyclohexanone ; Alumina B ; Cu&ndash ; Cr&ndash ; La/纬-Al2O3
• 刊名：Catalysis Communications
• 出版年：2012
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：5 April, 2012
• 卷：20
• 期：Complete
• 页码：58-62
• 文件大小：833 K

摘要

The reductive amination of cyclohexanone with 1,6-diaminohexane over alumina B modified Cu-Cr-La/纬-Al₂O₃ was investigated. The experimental results indicated that the doped alumina B remarkably increased the selectivity of N, N鈥?dicyclohexyl-1,6-diaminohexane. The catalysts were studied by BET, XRD, TEM and NH₃-TPD, the introduction of alumina B to Cu-Cr-La/纬-Al₂O₃ reduced the strong acid capacity of the catalyst, which inhibited the generation of cyclohexane and 2-cyclohexylidene-cyclohexanone, and facilitated the desorption of amino compounds. The reaction parameters, including reaction temperature and molar ratio of starting materials, were optimized and a 92.6%selectivity of N, N鈥?dicyclohexyl-1,6-diaminohexane was obtained under optimized conditions.