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离子液体中过氧钨配合物催化氧化燃油脱硫

Chemical Research and Application(2011)

Cited 23|Views5
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Abstract
合成了一种含D,L-丙氨酸配体的钨的过氧配合物WO(O2)2.2C3H7NO2.H2O催化剂。以WO(O2)2.2C3H7NO2.H2O/[Bmim]PF6/H2O2体系为研究模型,考察了反应时间、温度和催化剂用量等因素对燃油脱硫率的影响。结果表明,在70℃反应2 h,n(H2O2)∶n(二苯并噻吩)∶n(催化剂)=30∶10∶1,离子液体用量1mL,模型油中二苯并噻吩脱除率在[Bmim]BF4、[Omim]BF4、[Bmim]PF6和[Omim]PF6中分别为97.3%、96.7%、98.7%和99.0%。实验结果进一步表明,离子液体萃取耦合催化氧化脱硫法能实现深度脱硫,且该方法优于仅用离子液体萃取脱硫或不使用离子液体的催化氧化脱硫法。
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Key words
peroxo-tungsten complex,oxidative desulfurization,extraction,ionic liquid
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