그물구조 수지 촉매상에서 가솔린 옥탄가 향상제인 ETBE 합성

박진화; 이진형; 김재승

Journal of the Korean Industrial and Engineering Chemistry, Vol.5, No.5, 825-835, October, 1994

Export Citation

그물구조 수지 촉매상에서 가솔린 옥탄가 향상제인 ETBE 합성

Synthesis of ETBE as an Octane Enhancer for Gasoline over Macroreticular Robin Catalysts

박진화, 이진형, 김재승

초록

가솔린 옥탄가 향상제인 ETBE(Ethyl Tertiary Butyl Ether)의 기상합성을 성질이 다른 그물구조형 이온교환 수지인 Amberlyst-15와 Amberlyst XN-1010촉매상에서 고정층 상압 유통식 미분형 반응기로 수행하였다. 반응물로는 ethanol과 isobutene을 사용하였고, 반응온도 70-140℃ 범위에서 실험을 행하여 수지촉매들의 활성을 비교한 결과 Amberlyst-15의 활성이 Amberlyst XN-1010보다 우수하였다. 미분형 반응기로부터 얻은 속도론적 자료를 선형회귀분석하여 적합한 속도모델과 매개변수를 구한 결과 ETBE합성반응은 LHHW(Langmuir-Hinshelwood-Hougen-Waston) 반응기구에 의하여 이루어진 것으로 보여진다. 또한, 각 온도에 따른 표면 반응속도 상수와 반응물들의 흡착평형상수와 표면반응 활성화 에너지를 구하였으며, Amberlyst-15 및 Amberlyst XN-1010의 활성화에너지는 각각 18.64 및 24.19 Kcal/mol이었다.

Synthesis of ETBE as an octane number enhancer from ethanol and isobutene in a flow reactor under atmospheric pressure was studied. Amberlyst-15 and Amberlyst XN-1010 were used as catalysts within the temperature range of 70-140℃. The activity of Amberlyst 15 was higher than that of Amberlyst XN-1010. The reaction rate data obtained under differential reactor condition were tested by a linear regression method to determine the reaction mechanism and kinetic parameters. The ETBE synthesis reaction seems to be proceeded via the LHHW(Langmuir-Hinshelwood-Hougen-Watson) machanism. The activation energy of the surface reaction was estimated by the reaction rate constants as well as the adsorption equilibrium constants. Apparent activation energies are 18.64 and 24.19kca1/mol for Amberlyst-15 and Amberlyst XN-1010, respectively.

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[1] Tau LM, Davis BH, Appl. Catal., 53, 263 (1989)

[2] Pitochelli AR, "Ion Exchange Catalysis and Matrix Effects," Rohm and Hass Co, Philadelphia, U.S.A. (1975)

[3] Rohm and Hass Co., "Amberlyst 15," Philadelphia, May (1972)

[4] Helfferich F, "Ion Exchange," McGarw-Hill, New York (1962)

[5] Prokop Z, Setinek K, Coll. Czech. Chem. Commun., 47, 1613 (1982)

[6] Bothe N, Widdecke H, Polymer, 20, 850 (1979)

[7] Wheato RM, Harrington EF, Ind. Eng. Chem., 44, 1976 (1952)

[8] 이진형, 석사학위논문, 전남대학교 (1994)

[9] Rodriguez O, Setinek K, J. Catal., 39, 449 (1975)

[10] Diemer RB, Dooley KM, Gates BC, Albridght RL, J. Catal., 74, 373 (1982)

[11] Weissermel K, Arpe HJ, "Industrial Organic Chemistry," Verlag, Chem., Weinheim (1983)

[12] Kabel RL, Johnson LN, AIChE J., 8, 621 (1962)

[13] Gates BC, Johnson LN, AIChE J., 17, 981 (1971)

[14] Thornton R, Gates BC, J. Catal., 34, 275 (1974)

[15] Beranek L, Catal. Rev.-Sci. Eng., 16, 1 (1977)

[16] Tejero J, Cunill J, Izquierdo JF, Ind. Eng. Chem. Res., 280, 1269 (1989)

[17] Cunill F, Tejero F, Izquierdo JF, Appl. Catal., 34, 341 (1987)

[18] Setinek K, Beranek L, J. Catal., 17, 306 (1970)