Process for continuous hydrogenation of adiponitrile
    9.
    发明授权
    Process for continuous hydrogenation of adiponitrile 失效
    己二腈的连续氢化方法

    公开(公告)号:US5900511A

    公开(公告)日:1999-05-04

    申请号:US48603

    申请日:1998-03-26

    CPC分类号: C07C253/30 C07C209/48

    摘要: A process for continuous hydrogenation of adiponitrile (ADN) to hexamethylene diamine (HMD) and optionally to amninocapronitrile (ACN) involving the catalytic hydrogenation of adiponitrile at relatively low temperature (e.g., 75.degree. C.) and pressure (e.g., 500 psig) using a sponge cobalt catalyst (Raney.RTM. Co) in a reaction medium that is substantially free of caustic. In such a process periodic addition of water controls the production of side reaction products and the periodic addition of ammonium hydroxide rejuvenates the catalyst. Hexamethylene diamine is an important intermediate for the synthesis of polyamides such as Nylon-6,6 and aminocapronitrile is a potential intermediate of Nylon-6.

    摘要翻译: 将己二腈(ADN)连续氢化成六亚甲基二胺(HMD)和任选地包括在相对低的温度(例如75℃)和压力(例如,500psig)下进行己二腈的催化氢化的纳米碳腈(ACN)的方法,使用 海绵钴催化剂(Raney TM Co)在基本上不含苛性碱的反应介质中。 在这种方法中,定期添加水控制副反应产物的生产并且周期性加入氢氧化铵使催化剂复原。 六亚甲基二胺是合成聚酰胺如尼龙-6,6的重要中间体,氨基己腈是尼龙-6的潜在中间体。