AMPS釜液回收N-叔丁基丙烯酰胺工艺及检测方法
程伟琴 , 赵聪聪 , 冯明 , 杨鹏飞 , 王延花 , 霍二福
现代化工 ›› 2026, Vol. 46 ›› Issue (S2) : 164 -167.
AMPS釜液回收N-叔丁基丙烯酰胺工艺及检测方法
Process and detection method for recovering N-tert-butylacrylamide from AMPS kettle residue
针对2-丙烯酰胺-2-甲基丙磺酸(AMPS)生产中浓缩液经水解回收N-叔丁基丙烯酰胺(N-t-BAA)的难题,开发多级水相纯化-乙醇重结晶工艺。优化工艺为一级水料比1.5∶1、二级补加0.5倍水、静置6 h,初产品纯度≥98.5%;再经乙醇重结晶,产品纯度≥99.7%,磺酸类杂质≤0.1%,总回收率84.23%。乙醇母液可循环使用5次,产品纯度>99.5%。建立的高效液相色谱(HPLC)检测方法线性良好(R2=0.998 9),检出限0.05~0.06 mg/L,平均回收率101.45%(RSD=1.2%)。质谱(MS)和核磁共振(NMR)确证结构。
To address the challenge of recovering N-tert-butylacrylamide (N-t-BAA) from the concentrated liquid generated in the production of 2-acrylamido-2-methylpropanesulfonic acid (AMPS) via hydrolysis,a multi-stage aqueous purification-ethanol recrystallization process was developed.The optimized conditions are:primary water-to-material ratio of 1.5∶1,secondary addition of 0.5 equivalents of water,and settling time of 6 h.After aqueous crystallization and phase separation,the crude product reaches a purity of ≥98.5%;subsequent ethanol recrystallization affords a final product with a purity of ≥99.7%,with sulfonic acid impurities of ≤0.1%,and an overall recovery of 84.23%.The ethanol mother liquor can be recycled for five cycles,with product purity still >99.5%.The established high-performance liquid chromatography (HPLC) method exhibits good linearity (R2=0.998 9),detection limits of 0.05-0.06 mg/L,and an average recovery of 101.45% (RSD=1.2%).The structure was confirmed by mass spectrometry (MS) and nuclear magnetic resonance (NMR).
AMPS釜液 / N-叔丁基丙烯酰胺 / 水解转化 / 水相析晶 / 高效液相色谱
AMPS kettle residue / N-tert-butylacrylamide / hydrolytic conversion / aqueous crystallization / HPLC
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河南省科学院基本科研业务费项目(20250608001)
中原科技创新领军人才项目(254200510045)
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