氨基酸杂多酸盐在模拟汽油催化氧化脱硫中的应用研究

发布时间：2018-02-04 08:43

  本文关键词： 氨基酸 杂多酸 离子液体 模拟汽油 氧化脱硫　出处：《无机盐工业》2017年03期 　论文类型：期刊论文

【摘要】：分别以甘氨酸(Gly)、丙氨酸(Ala)和谷氨酸(Glu)为阳离子,磷钨酸和磷钼酸为阴离子,合成了氨基酸杂多酸盐[Gly]_3PW_(12)O_(40)、[Ala]_3PW_(12)O_(40)、[Glu]_3PW_(12)O_(40)和[Glu]3PMo12O40。以氨基酸杂多酸盐为催化剂、离子液体1-甲基-3-辛基咪唑六氟磷酸盐([Omim]PF6)为萃取剂、过氧化氢为氧化剂,考察了模拟汽油催化氧化脱硫效果。其中,[Glu]_3PW_(12)O_(40)-[Omim]PF6-H2O2催化氧化脱硫体系的脱硫效果最好,采用该体系考察了脱硫条件对模拟汽油脱硫率的影响。结果表明,当n(过氧化氢)∶n(硫)∶n(催化剂)=100∶25∶1、反应时间为60 min、反应温度为50℃、V([Omim]PF6)∶V(模拟汽油)=1∶5时,模拟汽油中二苯并噻吩(DBT)的脱除率可达98.5%,重复使用5次脱硫率仍高于95%。
[Abstract]:Amino acid heteropolyacid salts were synthesized with glycine Glycine, alanine (AlaA) and glutamate (Glu.) as cations and phosphotungstic acid and phosphomolybdic acid as anions, respectively. [Gly. [Ala. [Glu. [Glu] 3PMo12O40. using amino acid heteropolyacid as catalyst, ionic liquid 1-methyl -3octyl imidazolium hexafluorophosphate. [Omim] PF6) was used as extractant and hydrogen peroxide as oxidant to investigate the catalytic oxidation desulfurization effect of simulated gasoline. [Glu. [The desulfurization effect of Omim] PF6-H2O2 catalytic oxidation desulfurization system was the best. The effect of desulfurization conditions on the desulfurization rate of simulated gasoline was investigated by using the system. When the reaction time is 60 min, the reaction temperature is 50 鈩，

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