作　　者： ; ;

机构地区： 东莞理工学院化学与环境工程学院化学生物工程系

出　　处： 《江苏大学学报（自然科学版）》 2009年第2期193-196,共4页

摘　　要： 以辛烷、十二烷或十六烷为油相,非离子表面活性剂Tween80和Span80按1∶1质量比复配的复合型表面活性剂为乳化剂,PEG-400为助乳化剂制备高分散的油包水型(W/O)微乳,并在其静态体系中生成甲烷水合物,把它和纯水体系以及表面活性剂体系(含等量的乳化剂)进行了对比.结果表明:在微乳中甲烷水合物的诱导时间缩短,生成速率和耗气量明显增加,生成的水合物成粒状,含水率低.另外,选择油相时应选取不生成水合物,在水中溶解度小而且对甲烷溶解度尽量大的有机溶剂,并对微乳液中甲烷水合物的生成机理进行了探讨. Highly dispersed water-in-oil（W/O） micro-emulsion was prepared by using the compound surfactant m（Tween80）∶m（Span80）=1∶1 as emulsifier,PEG-400 as assistant emulsifier and octane,hexadecane or emulsifier as the oil phase.Methane hydrate was formed in quiescent micro-emulsion system.The results show that the formation rate and methane consumption markedly increase for methane hydrate,while the inducing time and water ratio obviously decrease in micro-emulsion comparing with the pure water system and the system including emulsifier.Organic solvent,which is selected as oil phase,cannot form hydrate and has the lowest solubility in water and the highest solubility in methane.The formation mechanism of methane hydrate in micro-emulsion is also discussed.

关 键 词： 甲烷水合物 微乳 机理 生成反应 表面活性剂

领　　域： [化学工程]