摘要
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。
A peroxo-tungsten amino acid complex WO（O2）2·2C3H7NO2·H2O was synthesized with D,L-alanine as ligand.In the case of WO（O2）2·2C3H7NO2·H2O/PF6/H2O2 desulfurization system,detailed experiments were plotted including reaction time,temperature,amount of catalyst and so on.It was found that dibenzothiophene（DBT）removal could achieved 98.7%,96.7%,98.7%and 99.0%inPF6,PF6,BF4 andPF6 under the optimized conditions of 70℃,reaction for 20 min,molar ratio of H2O2,DBT and Catalyst=30∶10∶1,amount of ionic liquid was 1 mL.This experiment demonstrated that a combination of catalytic oxidation and extraction in IL colud deeply remove DBT from model oil.This result also indicated the remarkable advantage of this process over the desulfurization by mere solvent extraction with IL or catalytic oxidation without IL.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2011年第10期1309-1312,共4页
Chemical Research and Application
基金
国家自然科学基金项目(20876071
21076099)
中国博士点基金项目(20103227110016)
中国博士后基金项目(20090461067
201003556)
江苏省博士后基金项目(1001025C)
江苏大学高级人才启动基金项目(09JDG063)资助
关键词
离子液体
萃取
过氧钨配合物
氧化脱硫
ionic liquid
extraction
peroxo-tungsten complex
oxidative desulfurization
