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首页> 外文期刊>Bulletin of the Korean Chemical Society >Absorption of SO2 at High Temperatures by Ionic Liquids and the Absorption Mechanism
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Absorption of SO2 at High Temperatures by Ionic Liquids and the Absorption Mechanism

机译:离子液体在高温下对SO2的吸收及其吸收机理

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The capture of SO2 at or close to the temperatures of real flue gas is much more attractive in application. In this work, two kinds of ionic liquids (ILs) based on lactate anion were used to absorb SO2 at high temperatures from 100 to 120 °C. The ILs show high absorption capacities of over one mol SO2 per mol IL at 110 °C. The absorption of SO2 by the ILs based on lactate anion is reversible and the ILs can be reused for the capture of SO2 at high temperatures with high absorption capacity and thermal stability. Furthermore, the absorption mechanism of SO2 by the ILs was studied by FT-IR,~1H NMR and ~(13)C WAR spectra. It has been found that there are strong chemical interactions between the ILs and SO2. Also the absorption mechanism is different when there is water present in ILs compared to when there is not.
机译:在实际烟气温度或接近实际烟气温度的情况下捕获SO2在应用中更具吸引力。在这项工作中,使用两种基于乳酸根阴离子的离子液体(ILs)在100至120°C的高温下吸收SO2。 IL在110°C时显示出高的吸收能力,每摩尔IL吸收一摩尔以上的SO2。基于乳酸根离子的离子液体对二氧化硫的吸收是可逆的,并且可以在高温下以高吸收能力和热稳定性将离子液体用于捕集二氧化硫。此外,通过FT-IR,〜1H NMR和〜(13)C WAR光谱研究了离子液体对SO2的吸收机理。已经发现IL与SO 2之间存在强的化学相互作用。同样,当ILs中存在水时,与不存在时相比,吸收机理也不同。

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