摘要
静态体系生成甲烷水合物是个缓慢的、不完全的过程。即使使用表面活性剂也不能实现反应物的1 0 0 %转化。本文讨论了在静态反应停止后,使用系统温度振荡的方法来促进水合反应的继续进行,直至完全转化。在系统温度从-1 0～4℃之间周期振荡时,原本停滞的水合反应在水的相变温度附近又开始发生反应,由于水合物合成时铠甲效应的存在,水在样品中的过冷度达到1 0℃左右。文中对样品的热物性测试表明,在经过几个温度变化周期后,反应非常完全,反应器中样品是1 0 0 %的甲烷水合物。
Forming methane hydrate in a quiescent system is a slow and incomplete process. It is impossible to obtain 100% methane hydrate even in a stirred system with surfactant added. This work discusses the effect of using temperature vibration in promoting the quiescent reaction. When the temperature vibrates from -10℃ to 4℃, the stagnated reaction reacts again in the zone of phase change temperature of water. The surviving water in the sample has a super-cooling temperature up to about 10℃ because of the existence of armor effect. The thermal property measurement indicates the final sample in our quiescent system is 100% methane hydrate after several temperature vibration periods.
出处
《化学通报》
CAS
CSCD
北大核心
2005年第5期379-384,共6页
Chemistry
基金
国家自然科学基金重点资助项目 (5 0 1 76 0 5 1 )
国家基础研究规划基金资助项目 (G2 0 0 0 0 2 6 30 6 )
