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以PEO-PPO-PEO三嵌段共聚物(F127,Ma=12 600)为表面活性剂,与铝源AlCl_3通过原位合成法制备了F127-MoO_3/Al_2O_3催化剂,并对催化剂进行了FT-IR、XRD、FE-SEM和N_2吸附-脱附等表征。考察了不同反应条件对模型油催化氧化脱硫效果的影响。结果表明,表面活性剂F127的加入促进了MoO_3在Al_2O_3表面的高度分散,提高了催化剂的比表面积、平均孔径和孔容;对于10.0 m L模型油(硫质量分数为400μg/g),在催化剂质量为0.06 g,氧化剂用量为0.03 m L,反应温度为70℃,反应时间为23 min时,苯并噻吩(BT)的脱除率接近100%,BT被氧化成BTO_2;催化剂重复使用5次后,仍具有较高活性。
The F127-MoO_3 / Al_2O_3 catalyst was prepared by in-situ synthesis of AlCl_3 from aluminum source with PEO-PPO-PEO triblock copolymer (F127, Ma = 12 600) as the surfactant and the FT- , XRD, FE-SEM and N 2 adsorption-desorption. The effect of different reaction conditions on catalytic oxidative desulfurization of model oil was investigated. The results showed that the addition of surfactant F127 promoted the high dispersion of MoO_3 on the surface of Al_2O_3, and increased the specific surface area, average pore diameter and pore volume of the catalyst. For 10.0 m L of model oil with a sulfur content of 400 μg / g, Mass of 0.06 g, oxidant dosage of 0.03 m L, reaction temperature of 70 ℃, reaction time of 23 min, the benzothiophene (BT) removal rate was close to 100%, BT was oxidized to BTO_2; the catalyst was reused 5 times Still have higher activity.