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将固定床动态酶促反应过程和超临界二氧化碳萃取分离过程相耦合,设计并建立了一套超临界相反应分离一体化的实验装置。在该装置上初步考察了反应压力和温度对脂肪酶催化油酸甲酯和外消旋香茅醇酯交换反应的影响。结果表明,我们所建立的反应装置能有效地实现反应分离一体化过程;当体系压力接近二氧化碳的临界压力时反应速率最高;9MPa压力下反应温度为328K时反应转化率最高,而在14MPa压力下反应转化率在308K～328K之间随着温度的升高而增大。
The dynamic bed enzymatic reaction process and supercritical carbon dioxide extraction and separation process coupled to design and set up a set of supercritical reaction separation and integration of the experimental device. The effect of reaction pressure and temperature on the lipase-catalyzed transesterification of methyl oleate and racemic citronellol was investigated. The results show that the reaction device we established can effectively realize the reaction separation and integration process; when the system pressure is close to the critical pressure of carbon dioxide, the reaction rate is the highest; under the pressure of 9MPa, the reaction conversion rate is the highest when the reaction temperature is 328K; under the pressure of 14MPa The conversion rate of reaction between 308K ~ 328K increases with the increase of temperature.