Citation:
ZHAO Sheng-nan, MO Zhou-sheng, QIN Yu-cai, SONG Yan-fen, SHI Li-fei, ZHU Meng-meng, SONG Li-juan, DUAN Lin-hai. Adsorption, desorption and conversion of methylthiophene on HY zeolite[J]. Journal of Fuel Chemistry and Technology,
;2015, 43(5): 614-619.
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HY zeolite obtained from NH4Y was characterized by N2 physisorption, NH3-TPD, and in-situ Py-FTIR. The adsorption, desorption, and conversion of methylthiophene on the HY zeolite was investigated by using the intelligent gravimetric analysis (IGA) and temperature programmed desorption-mass spectrum (TPD-MS). The results indicated that 2-methylthiophene and 3-methylthiophene are strongly chemisorbed on the strong Brnsted acid sites of HY zeolite, which promote the disproportionation, dealkylation and cracking reactions at 200 ℃. Compared with 2-methylthiophene, 3-methylthiophene is prone to crack and form 3-methyltetrahydrothiophene via the hydrogen transfer reactions.
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