초록 |
In order to reduce the released greenhouse gas into the atmosphere, several technologies such as sequestering in the ocean or the subterranean has been studied. Recently result about recovering CH4 from solid CH4 hydrate with CO2 [Lee, et al., Angew. Chem. Int. Ed. (2003)] seems quite attractive. CO2 in condition of the deep ocean would be liquified due to low saturation pressure (37bar at 3oC). To apply to CO2 replacement, it is needed to study reaction between two phases (LCO2-HCH4). In-situ reaction for CO2 replacement in CH4 hydrates was observed by using Raman Spectroscopy. Composition of liquid CO2 and hydrates before and after replacement was measured by Gas Chromatography. |