哌啶清洁生产工艺条件的研究

Research on a cleaner production process of piperidine

研究了有机电催化还原的方法生产哌啶的清洁生产工艺 ,探讨了电极种类、吡啶初始浓度、电流密度、电解质溶液浓度及添加剂的加入等条件对哌啶的收率和电流效率的影响。结果表明 ,采用 Raney Ni板式电极 ,吡啶初始浓度为 0 .2～ 0 .3 mol/L ,电流密度为 2 0～ 80 A/dm2 ,常温下在 0 .5 mol/L的 Na OH水溶液中进行电还原反应 ,可获得 90 %以上的哌啶收率和 80 %以上电流效率。该清洁生产工艺具有产率高、纯度高 ,生产条件温和 。

A cleaner production process of piperidine by using organic electrocatalytic reduction methods is studied with the focus on the effects of different factors such as the kinds of electrode, initial concentration, current density, electrolyte concentration. Using Raney Ni electrode, under the concentrations of initial concentration 0.2~0.3 mol/L, current density 20~80 A/dm\+2 , NaOH concentration 0.5 mol/L, normal temperature, the overall piperidine yield is more than 90% and current efficiency is higher than 80%. It has advantages of mild manafacturing condition, energy-saving and high efficiency etc. \;