Kinetic Study and Modelization of n-Butenes Oligomerization over H-Mordenite

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• 作者：L. M. Tiako Ngandjui and F. C. Thyrion
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：1996
• 出版时间：April 1996
• 年：1996
• 卷：35
• 期：4
• 页码：1269 - 1274
• 全文大小：224K
• 年卷期：v.35,no.4(April 1996)
• ISSN：1520-5045

文摘

n-Butenes have been oligomerized at temperatures lowerthan 450 K in the liquid phase overH-mordenite in a continuously stirred tank reactor. Thecomposition and molecular weight ofthe products are very dependent on reaction temperature. Productsare essentially dimers,trimers, and tetramers. The complex reactions were modeled bytaking into account only thetype of carbonium ion; the initial rates showed that theoligomerization reactions followed aRideal mechanism. The dimerization rate constants of butenes andoligomers decrease withincreasing number of carbon atoms of the olefins, while the adsorptionconstants increase withthe hydrocarbon chain length. A model for the conversion ofbutenes to liquid products overH-mordenite is proposed. This model fits the experimental datarather well, although somesimplifying approximations were made to describe these complexreactions.