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摘要
A series of Bronsted-Lewis organic. inorganic heteropoly acids was synthesized and used for cataly-zing alkylation desulfurization of model fluid catalytic cracking ( FCC ) gasoline. Among these prepared Bronsted-Lewis organic. inorganic heteropoly acids, Sm-0.33 [ MIM-PS ] HPW12 O-40 has the highest acid strength and exhibits the best catalytic activity for the alkylation of three thiophenic sulfides including thiophene ( T ), 2-methyl thiophene ( 2-MT) and 3-methyl thiophene ( 3-MT ) in model FCC gasolines. The effects of the dosage of the catalyst, reaction temperature and reaction time on the conversions of three thiophenic sulfides catalyzed by Sm-0.33 [ MIM-PS ] HPW12O40 were investigated. The selected optimal conditions as follows: the mass ratio of the catalyst to model FCC gasoline 1 : 50, reaction temperature 125. and reaction time 1 h. Under the optimal conditions, T, 2-MT and 3-MT all can be nearly completely transformed. The recyclability of the cata. lyst Sm-0.33 [ MIM-PS ] HPW12O40 was investigated. The results show the catalyst exhibits very excellent recycla. bility. Under the above selected reaction conditions, the catalytic activity of Sm-0.33 [ MIM-PS ] HPW12O40 for the alkylation of three thiophenic sulfides nearly remains unchanged during 12 recycles.
- 出版日期2017-1-10
- 单位青岛科技大学
