CAJ | 학술논문

以强酸性阳离子大孔交换树脂 Lewatit2620为催化剂,催化α蒎烯水合反应,获得主要产物α松油醇.在催化反应中,部分α蒎烯发生异构化反应,生成单环萜烯,影响松油醇的收率.在搅拌釜反应器内分别考察了催化剂种类、溶剂种类、催化剂用量、反应物配比、温度及反应时间对α蒎烯转化率和α松油醇收率的影响.结果表明,优化反应条件为：催化剂用量为每克总液体炉料使用催化剂0.20 g,m(α蒎烯)∶m(水)∶m(溶剂 y)=1∶0.13∶2,反应温度333.15 K,反应时间4 h,此时α蒎烯转化率为98%,松油醇的收率为36%.本文建立拟均相(PH)模型来研究α蒎烯直接水合反应的动力学,并估算出动力学参数,通过模型得到的计算值与实验值是吻合的,故PH 模型适用于α蒎烯的直接水合反应.用准一级动力学模型确定了各反应的反应速率常数的表达式.
이강산성양리자대공교환수지 Lewatit2620위최화제,최화α파희수합반응,획득주요산물α송유순.재최화반응중,부분α파희발생이구화반응,생성단배첩희,영향송유순적수솔.재교반부반응기내분별고찰료최화제충류、용제충류、최화제용량、반응물배비、온도급반응시간대α파희전화솔화α송유순수솔적영향.결과표명,우화반응조건위：최화제용량위매극총액체로료사용최화제0.20 g,m(α파희)∶m(수)∶m(용제 y)=1∶0.13∶2,반응온도333.15 K,반응시간4 h,차시α파희전화솔위98%,송유순적수솔위36%.본문건립의균상(PH)모형래연구α파희직접수합반응적동역학,병고산출동역학삼수,통과모형득도적계산치여실험치시문합적,고PH 모형괄용우α파희적직접수합반응.용준일급동역학모형학정료각반응적반응속솔상수적표체식.
A study ofα-pinene hydration to produceα-terpineol has been carried out using macropore-strong acidic-cation exchange resin Lewatit2620 as the catalyst.Isomerizations ofα-pinene take place simultaneously,changing into monocyclic terpene and effecting the yield ofα-terpineol during the catalytic hydration reaction.Effects of variables such as types of catalyst,solvents,catalyst amount,mass ratio of reactants,temperature and reaction time in a stirred-tank reactor on the conversion ofα-pinene and yield ofα-terpineol were investigated systematically.The preferred reaction conditions were determined as the following:catalyst loading:0.20 g catalyst/g total soluition,m (α-pinene)∶m(water)∶m(solvents:y)is 1∶0.13∶2,reaction temperature 333.1 K,reaction time 4 h.Under this condition,α-pinene hydration works efficiently.the conversion ofα-pinene is 98% and yield ofα-terpineol is 36%. The kinetics study is the basis of simulation,design,and amplification of industrial reactors,and is one of the main contents of chemical engineering.So the kinetics of theα-pinene hydration reaction has important significance.In this paper,a pseudo-homogeneous(PH)kinetic model was utilized to correlate the experimental data and estimated the kinetic parameters.The estimated kinetic parameters made the calculated results in excellent agreement with the ex-perimental results,indicating that the PH model gives a good representation of the kinetic behavior for the direct hy-dration of turpentine.A pseudo first order model was used to explain the reaction rate equation.