Butene catalytic cracking to ethylene and propylene on fluorinated ZSM-5-based catalyst
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In this paper, fluorine-containing ZSM-5 catalysts were first prepared and applied for butene catalytic cracking. Fluorinated ZSM-5 was obtained by treating the ZSM-5 zeolite with NH4F solutions at 85 °C. XRD showed that the intrinsic mordenite framework inverted structure of ZSM-5 zeolite was preserved and the corresponding crystallinity remained unchanged. The N2 adsorption/desorption measure indicated the generation of a number of new micropores. The experiment of butene catalytic cracking showed that catalytic performances can be greatly improved after fluorination treatment. The highest yield of ethylene plus propylene was obtained when the treated concentration of NH4F solution is 0.1 M.
KeywordsFluorinated treatment Catalytic cracking Ethylene and propylene Micropore ZSM-5 zeolite
This work was sponsored by West Light Foundation of The Chinese Academy of Sciences, Science and Technique Program of Lanzhou City, Science-Technology Foundation for Middle-Aged and Young Scientist of Gansu Province, and Key Laboratory of Oil & Gas Fine Chemicals, Ministry of Education & Xinjiang Uyghur Autonomous Region, Xinjiang University (XJDX0908-2011-03).