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H-ZSM-5 촉매상에서 에틸렌에 의한 톨루엔의 알킬화 반응속도
Kinetics of Toluene Alkylation with Ethylene over H-ZSM-5
HWAHAK KONGHAK, June 1993, 31(3), 333-337(5), NONE
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Abstract
고정층 상압 미분반응기에서 H-ZSM-5 촉매상에서의 에틸렌의 의한 톨루엔의 알킬화 반응실험을 반응온도 300-330℃의 범위에서 수행하였다. 전형적인 Langmuir-Hinshelwood-Hougen-Watson（LHHW） 반응속도식을 가정하고, 비선형 회귀분석법으로 속도식의 각 상수들을 구하였다. 초기 반응속도와 열역학적 기준에 의한 검토 결과, 표면반응이 율속단계인 비경쟁적 흡착 모델이 본 반응에 가장 잘 적용됨을 알 수 있었다.
Alkylation of toluene with ethylene over H-ZSM-5 catalyst was carried out in a fixed-bed differential reactor at 300-330℃ under atmospheric pressure. A typical Langmuir-Hinshelwood-Hougen-Watson（LHHW） kinetic expression was postulated, and the kinetic parameters were estimated by a nonlinear regression method. The results of model discrimination by using initial rate and thermodynamic criteria indicate that a noncompetitive adsorption model with surface reaction control scheme is the most suitable one for this reaction.
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