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        Aromatization of Ketones over Zeolite Catalysts

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        Master Thesis JvD.pdf (3.005Mb)
        Publication date
        2018
        Author
        Duin, J.J.B. van
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        Summary
        The aromatization reaction of 4-heptanone over ZSM-5 was studied. 450 °C was found to be the optimum temperature for BTEX (benzene, toluene, ethylbenzene and (para-, meta-, ortho-) xylene) formation. With 29 %c yield to BTEX, a Si/Al of 25 was determined to be the optimal ratio. A significant percentage of the carbon did however end up in short chain olefins and C5+ aliphatics. Gallium was incorporated in the zeolite framework as a dehydrogenating specie in 1.5, 3 and 4.5 wt.%. Ammonia desorption and pyridine adsorption showed 3 wt.% of Ga having the highest acid site density, and hydrogen reduction showed 3 wt.% Ga having the highest density of active dehydrogenating species. Usage of this catalyst resulted in a BTEX yield of 66 %c.
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        https://studenttheses.uu.nl/handle/20.500.12932/38155
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