论文部分内容阅读
[Objective]The aim was to find optimum reaction conditions for synthetic process of Vitamin C.[Method]Vitamin C sodium was used as raw material to prepare vitamin C through acidification,separation,desalination,recovery and purification.The impact of reaction time,temperature,feedstock molar ratio and water content on the yield of vitamin C were investigated in the experiment.[Result]The optimum reaction conditions for synthetic process of Vitamin C were as follows:in the acidification test,reaction time 120 min,temperature 20-30℃,the molar ratio between hydrochloric acid and Vitamin C sodium 1:1 and water content 41.0%.Under the above condition,the purity and yield of vitamin C reach 99.80% and 94.74% respectively.[Conclusion]The process can decrease consumption,enhance quality and recover of the product,improve the environmental pollution,shorten processing periods and reduce production cost.Thus,the process is suitable for industrialization.
[Objective] The aim was to find optimum reaction conditions for synthetic process of Vitamin C. [Method] Vitamin C sodium was used as raw material to prepare vitamin C through acidification, separation, desalination, recovery and purification.The impact of reaction time, temperature, feedstock molar ratio and water content on the yield of vitamin C were investigated in the experiment. [Result] The optimum reaction conditions for synthetic process of Vitamin C were as follows: in the acidification test, reaction time 120 min, temperature 20- 30 ℃, the molar ratio between hydrochloric acid and Vitamin C sodium 1: 1 and water content 41.0% .Under the above condition, the purity and yield of vitamin C reach 99.80% and 94.74% respectively. [Conclusion] The process can discharge consumption , enhance quality and recover of the product, improve the environmental pollution, shorten processing periods and reduce production cost.Thus, the process is suitable for industrialization.