The Resource Development for CH_4 Hydrates

控制气体（客体）和水（宿主）的混合形成速率，形成CO_2水合物和CH_4水合物，分析客体和宿主分子的拉尔南强度。客体分子和主体分子在水合物相和参比相之间的强度比表示水合物中两种分子的密度比。研究发现，非平衡条件下形成的天然气水合物的主客分子密度比与平衡条件下形成的不同，并随形成条件的变化而波动。研究了纯水/纯甲烷-气体反应体系的生成反应速率和解离反应速率，推导了考虑温度和甲烷气体摩尔浓度的反应方程。研究了搅拌速率对生成反应的影响。生成反应速率与l/T成正比，解离反应速率与l/T成反比。测定生成反应活化能为-140kJ/mol，解离反应活化能为114kJ/mol。

CO_2 hydrates and CH_4 hydrated were formed from gas (guest) and water (host) mixtures with controlling the formation rate to analyze Rarnan intensities of both guest and host molecules. The intensity ratio of both guest and host molecules between the gas-hydrate phase and the reference phase represented the density ratio of both molecules in teh gas hydrate. It was found that the guest-host molecular density ratio of gas hydrates formed under an non-equilibrium condition was different from that formed under equilibrium condition, and it fluctuated with formation conditions.The formation reaction rates and the dissociation reaction rates were studied at pure-water/pure-methane-gas reaction system, and the equations of both reaction were derived considering temperature and methane gas mole concentration. Also effects of the stirring rate on formation reaction were investigated. The formation reaction rate was in proportion to l/T and the dissociation reaction rate was inverse proportion to l/T.The activation energy of formation and dissociation reactions were determined as -140kJ/mol and 114kJ/mol respectively.