癸二腈加氢制癸二胺的工艺研究

对癸二胺产品传统加氢工艺进行了研究,探讨在反应中影响选择性及收率的原因,优化了工艺条件:温度70～90℃,压力1.5～2.5MPa,催化剂雷尼镍5%～10%(m/m,以癸二腈计),氢氧化钾0.05%～0.5%(m/m,以癸二腈计),v(癸二腈)∶v乙醇(90%～95%,v/v)]=1∶1。并按优化工艺条件进行了工业化放大生产,产品含量>99.7%,收率>97.5%(n/n),较传统加氢工艺高3%～4%。

Hydrogenation Process of Sebacicdinitrile to Diaminodecane

1,10-Diaminodecane was prepared from sebacia dinitrile via the traditional hydrogenation process, and factors affecting reaction selectivity and yield rate were investigated. The optimal process conditions were obtained as follow: temperature 70～90℃, pressure 1～2.5 MPa, 5%～10% Raney Nickel catalyst (m∶m, based on sebacic dinitrile), KOH amount, 0.05%～0.5% (m∶m, based on sebacic dinitrile), and 1∶1 molar ratio of sebacic dianitrile and ethanol (90%～95%, v∶v). The optimized process conditions has been approved to be successful in the industrialized production, with product purity over 99.7% , and yield rate over 97.5% (n∶n), which was 3%～4% higher than the traditional hydrogenation process.