Dealuminated ZSM-5 Zeolite Catalyst for Ethylene Oligomerization to Liquid Fuels

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作者
Nor Aishah Saidina AminDidi Dwi Anggoro Faculty of Chemical and Natural Resources Engineering Universiti Teknologi Malaysia Skudai Johor Malaysia Department of Chemical Engineering University of Diponegoro Semarang IndonesiaManusc
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关键词
ethylene; liquid fuels; oligomerization; dealumination; ZSM-5;
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中图分类号
O643.3 [催化];
学科分类号
081705 ;
摘要
<正>Ethylene oligomerization using ZSM-5 zeolite was investigated to study the role of Bronsted acid sites in the formation of higher hydrocarbons. The oligomerization of olefins, dependent on the acidity of ZSM-5 zeolite, is an important step in the conversion of natural gas to liquid fuels. The framework Si/Al ratio reflects the number of potential acid sites and the acid strength of the ZSM-5 catalyst. ZSM-5 with the mole ratio SiO2/Al2O3 equal to 30 was dealuminated for different periods of time according to the acidic ion-exchange method to produce ZSM-5 with various Si/Al ratios. The FT-IR analysis revealed that the integrated framework aluminum band, non-framework aluminum band, and silanol groups areas of the ZSM-5 zeolites decreased after being dealuminated. The performance of the dealuminated zeolite was tested for ethylene oligomerization. The results demonstrated that the dealumination of ZSM-5 led to higher ethylene conversion, but the gasoline selectivity was reduced compared to the performance
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页码:79 / 86
页数:8
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