【摘 要】
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The ZSM-22 and ZSM-35 zeolites were synthesized via the hydrothermal crystallization method. The samples were characterized by XRD, SEM, N2adsorption-desorption
【机 构】
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Engineering Research Center of Large Scale Reactor Engineering and Technology, East China University
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The ZSM-22 and ZSM-35 zeolites were synthesized via the hydrothermal crystallization method. The samples were characterized by XRD, SEM, N2adsorption-desorption, NH3-TPD, TPO, TG, and Raman spectrometry, and the results showed that ZSM-22 and ZSM-35 possessed similar microporous volume and acidity. In the alkylation of benzene with methanol, ZSM-22 and ZSM-35 showed different coke location, coking rate and graphitizing degree. Compared with the industrial ZSM-5, ZSM-22 and ZSM-35 both showed higher selectivity of toluene and xylene (93.63% and 96.50%, respectively) during the alkylation of benzene with methanol, and the selectivity of para-xylene in xylene isomers was 51.96% and 41.45%, respectively. Meanwhile, the selectivity of ethylbenzene and C9+ aromatics was also lower than that of industrial ZSM-5.
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