HWAHAK KONGHAK, Vol.12, No.4, 257-266, August, 1974
Bis(2-ethylhexyl) phthalate합성의 속도론(II)-황산촉매 반응-
Kinetics of Bis(2-ethylhexyl) phthalate Synthesis(II) -Sulfuric Acid-Catalytic Reaction-
초록
Mono（2-ethylhexyl） phthalate와 2-ethyl hexanol의 반응에 의한 bis(2-ethylhexyl) phthalate 합성에서 황산을 촉매로 사용했을 경우의 반응속도를 측정하여 반응기구를 구명하였다.
황산촉매사용시 위 반응에서의 반응차수는 mono（2-ethylhexyl） phthalate에 관하여 1 차이고 2-ethyl hexanol에 관하여도 1차이며 따라서 전차수는 2차이었다.
이 반응의 활성화에너지 값은 13 Kcal/mole이었다.
황산촉매의 농도 및 반응온도에 따르는 반응속도정수는 다음식으로 표시할 수 있었다.
k=（3×103+1.5×106Cc）e-13000/RT
또한 약간의 반응기구에 대한 고찰을 행하였다.
황산촉매사용시 위 반응에서의 반응차수는 mono（2-ethylhexyl） phthalate에 관하여 1 차이고 2-ethyl hexanol에 관하여도 1차이며 따라서 전차수는 2차이었다.
이 반응의 활성화에너지 값은 13 Kcal/mole이었다.
황산촉매의 농도 및 반응온도에 따르는 반응속도정수는 다음식으로 표시할 수 있었다.
k=（3×103+1.5×106Cc）e-13000/RT
또한 약간의 반응기구에 대한 고찰을 행하였다.
Chemical kinetic study for the esterification of mono（2-ethylhexyl） phthalate with 2-ethyl hexanol was carried out to find the reaction mechanism when sulfuric acid was used as the catalyst.
Experimental results gave a rate equation which was first order for both mono（2-ethylhexyl） phthalate and 2-ethyl hexanol. Activation energy value of 13 kcal per mole was obtained by the plot of temperature dependence of the rate equation.
The rate constant was expressed as a function of catalyst concentration and reaction temperature by the following equation.
k=（3×103+1.5×106Cc）e-13000/RT
Some discussion of the catalytic reaction mechanism was also given.
Experimental results gave a rate equation which was first order for both mono（2-ethylhexyl） phthalate and 2-ethyl hexanol. Activation energy value of 13 kcal per mole was obtained by the plot of temperature dependence of the rate equation.
The rate constant was expressed as a function of catalyst concentration and reaction temperature by the following equation.
k=（3×103+1.5×106Cc）e-13000/RT
Some discussion of the catalytic reaction mechanism was also given.