Tailoring Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine
Tailoring Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine
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DOI：
10.1016/j.jcat.2006.10.012
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发表时间：
2007-01-01
影响因子：
7.3
通讯作者：
Lercher, Johannes A.
中科院分区：
文献类型：
--
作者：
Chojecki, Adam;Veprek-Heijman, Maritza;Lercher, Johannes A.
考察了LiOH助剂对钴基丁腈选择加氢制正丁胺催化剂的影响。掺杂LiOH导致金属表面积分数的增加和由氧化铝颗粒装饰金属表面引起的刘易斯酸位点浓度的降低。发现两个因素对于实现对伯胺的高选择性至关重要。这些因素包括正丁胺相对于丁腈的低吸附常数（因为吸附的丁胺对于副产物形成是必需的）和催化缩合反应的低浓度的刘易斯酸位点。(c)2006爱思唯尔公司All rights reserved.
The influence of LiOH promotion on Co-based Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine was explored. Doping with LiOH led to an increase in the fraction of metallic surface area and reduced concentration of Lewis acid sites resulting from alumina particles decorating the metal surface. Two factors were found to be crucial to achieving high selectivity to primary amines. These factors include a low adsorption constant of n-butylamine relative to butyronitrile (because adsorbed butylamine is necessary for byproduct formation) and a low concentration of Lewis acid sites catalyzing condensation reactions. (c) 2006 Elsevier Inc. All rights reserved.