水分子笼的结构与甲烷水合物合成  

Structure of Water Molecular Cage and Synthesis of Methane Hydrate

作　　者：苏金昌 SU Jin-chang(Daqing Hydrate Research Center,Daqing 163453 China)

机构地区：[1]大庆水合物研究中心,黑龙江大庆163453

出　　处：《科技创新与生产力》2021年第11期77-78,共2页Sci-tech Innovation and Productivity

摘　　要：基于水中的H_(2)O、(H_(2)O)_(2)、(H_(2)O)_(4)比水的其他形态的水分子团更加稳定的事实认为,较稳定的水分子笼主要有4^(4)5^(4)6^(4)、4^(6)6^(8)、4^(4)5^(4)6^(8)、4^(3)5^(6)6^(3)、4^(6)6^(14)等笼型;较稳定的天然气水合物Ⅰ型、Ⅱ型、H型晶体单晶组成分别为:2(4^(4)5^(4)6^(4))6(4^(6)6^(8))46H_(2)O、16(4^(4)5^(4)6^(4))8(4^(4)5^(4)6^(8))136H_(2)O、3(4^(4)5^(4)6^(4))2(4^(3)5^(6)6^(3))1(4^(6)6^(14))34H_(2)O;人工合成甲烷水合物时,先将水在外加磁场作用下活化,使水中的H_(2)O、(H_(2)O)_(2)、(H_(2)O)_(4)基本处于独立的形态,与甲烷混合后,再加压降温钝化水,将有利于在甲烷分子周围构建包裹甲烷分子的水分子笼簇,获得较稳定的甲烷水合物。It is considered that the more stable water molecular cages types mainly include such as 4^(4)5^(4)6^(4),4^(6)6^(8),4^(4)5^(4)6^(8),4^(3)5^(6)6^(3)and 4^(6)6^(14),based on the fact that H_(2)O,(H_(2)O)_(2)and (H_(2)O)_(4)in water are more stable than other forms of water molecular groups.The single-crystal composed of type I,type II and type H crystals of more stable natural gas hydrate are 2(4^(4)5^(4)6^(4))6(4^(6)6^(8))46H_(2)O,16(4^(4)5^(4)6^(4))8(4^(4)5^(4)6^(8))136H_(2)O,3(4^(4)5^(4)6^(4))2(4^(3)5^(6)6^(3))1(4^(6)6^(14))34H_(2)O.During the artificial synthesis of methane hydrate,the water is activated under the action of external magnetic field to make the H_(2)O,(H_(2)O)_(2)and (H_(2)O)_(4)in the water basically in an independent form.After mixing with methane,passivating water by pressurizing and cooling is conducive to the construction of water molecular cage clusters surrounding methane molecules,so as to obtain more stable methane hydrate.

关 键 词：天然气 可燃冰 甲烷水合物 水分子簇 水分子笼 水分子环 水分子 分子结构 

分 类 号：O611.2[理学—无机化学] P618.13[理学—化学]