Acidic ionic liquids hybrid solid catalytic materials are prepared by the immobilization of acidic ionic liquids into inorganic supports, organic supports, metal-organic frameworks and other types of solid materials, which combine the features of acidic ionic liquids with heterogeneous solid supports. These hybrid materials have played an important role in many acid-catalyzed processes, exhibiting not only good catalytic performance but also superior reusabilities. In this review, the latest achievements toward acidic ionic liquids hybrid solid catalytic materials are presented, especially for the preparation methods based on different supports and their catalytic performance in many reactions, such as alkylation, acetalization and esterification. Meanwhile, the existing problems in applications are analyzed, and the development trends and prospects are put forward.
Contents
1 Introduction
2 Immobilization of acidic ionic liquids
2.1 Immobilization of acidic ionic liquids into inorganic support
2.2 Immobilization of acidic ionic liquids into organic polymer support
2.3 Immobilization of acidic ionic liquids into organic-inorganic hybrid materials
3 Applications of acidic ionic liquids hybrid solid catalytic materials
3.1 Alkylation reaction
3.2 Acetal reaction
3.3 Esterification and transesterification
3.4 Condensation reaction
3.5 Multicomponent reaction
3.6 Deep oxidation desulfurization
3.7 Cycloaddition reaction of carbon dioxide
4 Conclusion and outlook