烟气脱硫
双功能
吡啶
离子液体
氧化磷酸化
多孔性
化学
离子键合
布朗斯特德-洛瑞酸碱理论
化学工程
有机化学
催化作用
生物化学
离子
工程类
作者
Jie Yin,Wendi Fu,Jinrui Zhang,Xinmiao Zhang,Wenxiang Qiu,Wei Jiang,Linhua Zhu,Hongping Li,Huaming Li
标识
DOI:10.1016/j.cej.2024.152349
摘要
Porous ionic liquids have been highlighted with special interest for their desirable catalytic activity and extraction properties. Herein, bifunctional porous ionic liquids (denoted UiO-66-BAPILs) were synthesized by dispersing UiO-66 into a pyridinium-based Brønsted acidic ionic liquid ([BSPy][CF3SO3]) for oxidative desulfurization. The permanent cavity of UiO-66 moiety in UiO-66-BAPILs was validated as well-preserved by the SO2 uptake experiments and molecular size simulations. Under the optimum reaction conditions, the sulfur removal could reach up to 99.5% with hydrogen peroxide as the oxidant. Additionally, bifunctional UiO-66-BAPILs were deemed as both extractants and catalysts during the reaction. A possible mechanism has been proposed that UiO-66-BAPILs extract the aromatic sulfur compounds via π···π interactions and C-H···π interactions and meanwhile oxidize them with peroxysulfonic acids and •OH radicals. These findings will open up new avenues to facilitate the catalytic oxidation performance by constructing bifunctional Brønsted acidic porous ionic liquids.
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