Abstract: The idea in this study is to form gas hydrate of hydrochlorofluorocarbon HCFC-141b from its O/W emulsion, with OP-10 or SDS as emulsifying reagent, and the programmed cooling experiments were carried out in a controllable air conditioning chamber.The results showed that under static state emulsions containing different contents of HCFC-141b could form hydrates at a temperature above -5℃, with random induction time and fluctuating initiation temperature of hydrate formation.The results also showed that, before and after hydrate formation, the reaction system was iced over, and adding ice particles could induce rapid formation of hydrate.The emulsion from dissociation,by re-emulsification，could form hydrate at a temperature above freezing point within 1 h because of the “memory” effect.