The oligomerization of light alkenes is an important industrial route to provide motor fuels, lubricants, resins, detergents, dyes and additives. The main groups of catalysts used to oligomerize alkenes involve radical catalysts, metal supported materials and zeolite. Among the acidic catalysts zeolites were claimed to be the most promising for the industrial application due to environmentally friendliness, easy regeneration, high yields flexibility.<br/>In this work, the reactions of 1- butene over several acid zeolites were investigated in the liquid phase at 473 K. Influence of pore topology of zeolite on the 1-butene oligomerization was investigated.zeolites consisting of only 8-membered rings(FER),10-membered(MFI) and 12-membered rings (BEA) showed very different selectivity, but octene were the dominant products. The results show that as the pore diameter of the zeolite is increased, oligomerizations are enhanced. The zeolite with an 8- membered ring system shows low activity because of the strong diffusion resistance to 1-butene. The zeolite with an 12-membered ring system lessens the diffusion limitation and results in a higher activity even at lower temperature. Thus, 12-membered rings (BEA) is a best-performing catalyst (maximum conversion and lowest deactivation rate) for the oligomerization of light alkenes.

Catalytic performance of different zeolite catalysts for oligomerization of 1-butene

255th National Meeting (2018)

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