固体超强酸催化合成N-丁基-2-吡咯烷酮的研究

Study on the Synthesis of N-butyl-2-pyrrolidone Catalyzed by Solid Superacid

摘要: 采用固定床技术，以Al₂O₃@SO₄^2-/ZrO₂-NiO固体超强酸为催化剂，通过1，4-丁内酯（GBL）和正丁胺（BA）的缩合反应合成N-丁基-2-吡咯烷酮（NBP），考察了固定床工艺参数对NBP得率的影响。结果表明，合成NBP的最佳实验方案为：原料正丁胺与1，4-丁内酯摩尔配比为1.2∶1，反应温度300℃，反应物进料速度为0.5 mL/min，此时NBP的得率可达97.3%。

Abstract: N-butyl-2-pyrrolidone (NBP) is synthesized by the condensation reaction of 4-butyrolactone (GBL) and n-butylamine (BA) using Al₂O₃@SO₄^2-/ZrO₂-NiO as the catalyst in fixed bed. The influence factors on the conversion of NBP are investigated and the optimized reaction conditions are observed with the ratio of n-butylamine and 1,4-butyrolactone of 1.2:1, reaction temperature at 300℃, and the feeding rate of 0.5 mL/min. The yield of NBP can reach up to 97.3% based on 1,4-butyrolactone.