Development of Room-Temperature Ionic Liquids Superoxide Radical Anions towards Environmentally-friendly Wasterwater Treatment

研究了由超氧阴离子和单价阳离子冠醚配合物组成的新型离子液体作为废水处理的可重复使用氧化剂。由此产生的淡黄色离子液体的熔点接近环境温度。使用甘醚，即线性醚，而不是冠醚，即环醚，不能产生离子液体。用拉曼光谱研究了阳离子配合物在离子液体中的配位环境。通过一系列的磁化测量，考察了超氧阴离子的存在和长期稳定性。以化学稳定的咪唑和磷离子液体在超氧阴离子存在下的降解为模型反应，评价了超氧阴离子作为氧化剂的作用。

Novel ionic liquids consisting of superoxide anions and monovalent cationic crown-ether complexs were investigated as reusable oxidizing agents for wasterwater treatment. The resulting yellowish ionic liquids had melt points near ambient temperature. Use of glymes, i.e. linear ethers, instead of crown ethers, i.e. cyclic ethers, did not give ionic liquids. The coordination environment of the cationic complexs in the ionic liquids was invastigated by Raman spectroscopy. The presence and long-term stability of superoxide anions were examinded with a series of magnetization measurements. The effect of superoxide anions as oxidizing agents was evaluated by using the degradation of chemically stable imidazolium and phosphonium ionic liquids in the presence of superoxide anions as a model reaction.