离子液体
硝酸
化学
吸收(声学)
无机化学
氮气
离子键合
氧化物
离子
相(物质)
催化作用
有机化学
材料科学
复合材料
作者
Andreas Jonas Kunov-Kruse,Peter L. Thomassen,Anders Riisager,Susanne Mossin,Rasmus Fehrmann
标识
DOI:10.1002/chem.201601166
摘要
A new strategy for capturing nitrogen oxide, NO, from the gas phase is presented. Dilute NO gas is removed from the gas phase by ionic liquids under ambient conditions. The nitrate anion of the ionic liquid catalyzes the oxidation of NO to nitric acid by atmospheric oxygen in the presence of water. The nitric acid is absorbed in the ionic liquid up to approximately one mole HNO3 per mole of the ionic liquid due to the formation of hydrogen bonds. The nitric acid can be desorbed by heating, thereby regenerating the ionic liquid with excellent reproducibility. Here, time-resolved in-situ spectroscopic investigations of the reaction and products are presented. The procedure reveals a new vision for removing the pollutant NO by absorption into a non-volatile liquid and converting it into a useful bulk chemical, that is, HNO3 .
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