9Hayashi S,Hamaguchi H. Discovery of a magnetic ionic liquid [bmim]FeCl4 [J]. Chem Lett, 2004, 33(12):1590- 1591.
10Wang H, Yan R Y, Li Z X, et al. Fe-containing magnetic ionic liquid as an effective catalyst for the glycolysis of poly (ethylene terephthalate) [J]. Catal Commun, 2010, 11:763-767.