丙酮—水体系中辛烯基琥珀酸酐水解反应动力学  

The kinetics of the hydrolysis of octenyl succinic anhydride in acetone-water system

作　　者：覃雯[1] 尹沾合[2] 张友全[1] 

机构地区：[1]广西大学化学化工学院,广西石化资源加工及过程强化技术重点实验室,广西南宁530004 [2]广西工业职业技术学院,广西南宁530001

出　　处：《广西大学学报（自然科学版）》2012年第3期435-439,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：广西自然科学基金重点项目(2011GXNSFD018013)

摘　　要：为探讨常压下辛烯基琥珀酸酐(OSA)水解反应的动力学特征,以体积比为1∶2.40的水和丙酮混合溶液为水解介质,在OSA浓度很小(CH2O/CA0>>50),温度为298.15～328.15 K范围内,采用初始浓度微分法,研究了OSA的均相水解反应动力学,建立了动力学模型。结果表明,OSA的表观级数为一级,水解反应表观活化能Ea为47.46 kJ/mol,指前因子A为5.150×105。这为进一步揭示OSA的水解反应机理及其过程调控奠定了理论基础。The kinetics of homogeneous hydrolysis of octenyl succinic anhydride （OSA） was studied by the differential method of initial concentration and the kinetic model was established under the conditions that the hydrolysis medium was water-acetone mixture （ 1 ： 2.4 V/V）, the temperature was between 298. 15 -328. 15 K and OSA was in small concentration （CH2O/CAO〉〉50） to investigate the kinetic characteristics for the hydrolysis of OSA under atmospheric condition. The results showed that the apparent order of OSA hydrolysis was in first order, the apparent activation energy of hydrol- ysis reaction was 47.46 kJ/mol, while the pre-exponential factor was 5. 150×10^5. The results could provide the theoretical foundation for revealing the hydrolysis mechanism and process regulation of OSA.

关 键 词：辛烯基琥珀酸酐 水解 动力学 

分 类 号：TQ641[化学工程—精细化工]