The Resource Development for CH_4 Hydrates

通过控制CO_2水合物和CH_4水合物的生成速率，分析了客体分子和主体分子的Rarnan强度。客体分子和主体分子在水合物相与参比相中的强度比代表了客体分子和主体分子在水合物中的密度比。研究了纯水/纯甲烷-气体反应体系中水合物的生成反应速率和分解反应速率，推导了考虑温度和甲烷气体摩尔浓度的反应方程。考察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，生成反应和解离反应的活化能分别为-140kJ/mol和114 kJ/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.