Green chemistry materials and function

Research on alternatives to halogenated solvents includes investigations of the aqueous chemistries, ionic liquids, immobilized solvents, and supercritical fluids. [Pg.332]

Water has been shown to be an effective solvent in some chemical reactions such as free radical bromination. Supercritical fluids such as liquified carbon dioxide are already commonly used in coffee decaffeination and hops extraction. However, supercritical carbon dioxide can also be used as a replacement for organic solvents in polymerization reactions and surfactant production. Future work may involve solventless or neat reactions such as molten-state reactions, dry grind reactions, plasma-supported reactions, or solid materials-based reactions that use clay or zeolites as carriers. [Pg.333]