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Butyramide synthesis through butyronitrile hydration reaction with Cr/Cu catalyst

GAO Jun,SHI Jicheng   

  1. Daqing Refining & Chemical Company,PetroChina;School of Environmental & Chemical Engineering,Dalian Jiaotong University
  • Online:2008-03-05 Published:2008-03-05

Cr/Cu催化剂催化正丁腈水合反应合成丁酰胺

高 俊,史继诚   

  1. 大庆炼化公司;大连交通大学环境与化学工程学院

Abstract: The method of butyramide synthesis through hydration reaction of butyronitrile with water was studied. It was found that the highest activity of that Cr/Cu catalyst was obtained when the molar ratio of NaH2PO2/CuSO4 was 1.50—1.60 and that of Cr/Cu was 0.004—0.006 at the highest reaction temperature range of 55—57 ℃. The experimental results showed that the conversion rate of butyronitrile was up to 100% under the optimal reaction condition of the feed molar ratio of butyronitrile and water 1∶4.8,Cr/Cu catalyst concentration 22%—25%, reaction temperature 95—100 ℃ and residence time 5—6 h. In the experimental production conducted by the new process flow,the conversion rate of butyronitrile was 99% and the purity and yield of butyramide reached above 90 g·h-1 and 99.9% respectively.

摘要: 对正丁腈与水发生水合反应合成丁酰胺的方法进行了研究,在Cr/Cu催化剂制备过程中,当次磷酸钠与硫酸铜摩尔比为1.50~1.60、Cr/Cu摩尔比为0.004~0.006、最高反应温度控制为55~57 ℃时,所制备的Cr/Cu催化剂活性最高;正丁腈与水进料的摩尔比为1∶4.8,Cr/Cu催化剂浓度为22%~25%,反应温度为95~100 ℃,反应停留时间5~6 h,在此条件下,正丁腈的转化率接近100%;建立了丁酰胺生产工艺流程,在小试实验中,正丁腈的转化率为99%,丁酰胺产量90 g/h,丁酰胺的纯度达到了99.9%以上。

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