L-赖氨酸锌盐酸盐合成工艺研究

Study on the Synthesis Process of Zinc L-lysine Monohydrochloride

以L-赖氨酸盐酸盐和无水氯化锌为原料,按摩尔比2∶1合成L-赖氨酸锌盐酸盐,并对pH值、反应温度和反应时间进行考察,确定了最佳工艺。结果表明,当原料摩尔比为2∶1时,合成L-赖氨酸锌盐酸盐最佳工艺是反应pH值为7.5,反应温度为70℃,反应时间为4h,此时产品螯合率为98.60%,产率为89.36%。

Zinc L-lysine monohydrochloride was successfully synthesized using L-lysine monohydrochloride and anhydrous zinc chloride as materials with reaction molar ratio was 2： 1. Meanwhile, pH value, temperature and time of the reaction were investigated and the optimum process was determined. The results indicate that the optimum pH value is 7.5, temperature is 70 ℃, reaction time is 4 h, and the chelation percentage and yield of the product is 98.60% and 89.36%.