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. shu

Adsorption, desorption and conversion of methylthiophene on HY zeolite

1.
1. Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Province, Liaoning Shihua University, Fushun 113001, China;

Corresponding author: SONG Li-juan, DUAN Lin-hai,
Received Date: 27 October 2014

Fund Project: 国家自然科学基金(21476101, 21376114) (21476101, 21376114) 辽宁省自然科学基金(2013020122) (2013020122) 中国石油天然气股份有限公司(10-01A-01-01-01)。 (10-01A-01-01-01)

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 Brnsted 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.
- methylthiophene,
- HY zeolite,
- adsorption,
- disproportionation,
- aealkylation,
- catalytic cracking
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