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New mesoporous catalysts with Brønsted acid sites for deep oxidative desulfurization of model fuels
Catalysis Communications ( IF 3.7 ) Pub Date : 2020-07-29 , DOI: 10.1016/j.catcom.2020.106123
Polina Polikarpova , Argam Akopyan , Anna Shlenova , Alexander Anisimov

Mesoporous silica of MCM-41 type modified by sulfonic groups and molybdenum atoms has been synthesized. First time was investigated the activity of MCM-41 with chemically immobilized sulfonic groups as oxidative desulfurization catalysts and its activity was compared with molybdenum containing analogs. The main factors affecting the process consisting of catalyst dosage, temperature, reaction time, oxidant dosage were investigated in detail. In optimal conditions dibenzothiophene and 4-methyldibenzothiophene were removed completely. It was shown that nonmetal containing MCM-SO3H is an effective catalyst of oxidation desulfurization even better than molybdenum containing analogs. These catalysts retain their activity in DBT oxidation for 10 cycles.



中文翻译:

具有布朗斯台德酸位的新型中孔催化剂,可用于模型燃料的深度氧化脱硫

已经合成了通过磺酸基和钼原子改性的MCM-41型中孔二氧化硅。首次研究了化学固定的磺酸基团MCM-41作为氧化脱硫催化剂的活性,并将其活性与含钼的类似物进行了比较。详细研究了影响反应过程的主要因素,包括催化剂用量,温度,反应时间,氧化剂用量。在最佳条件下,可以完全去除二苯并噻吩和4-甲基二苯并噻吩。结果表明,含非金属的MCM-SO 3 H是一种有效的氧化脱硫催化剂,甚至比含钼的类似物更好。这些催化剂在DBT氧化中保持其活性10个循环。

更新日期:2020-08-05
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