(60bf) Synthesis of Carbon Materials for C1/C2 Separation

For the recovery of ethane and ethylene from natural gas, the demethanizer (De-C1), based on the cryogenic distillation, were widely used. If the pressure of reservoir is lower than 30 bar, the compressor or the compressing unit is required. Due to the high-energy consumption for the gas compressing, the new separation process development, which can operate at the moderate condition, was demanded. The adsorption process receives the attention from the associated researchers as the alternative. However, the adsorption process using commercial activated carbon, which was widely used for the hydrocarbons adsorption, has the limitation due to the similar kinetic diameter of CH₄, C₂H₄, and C₂H₆. In this study, the new adsorbent, which contains the micro-pores on the surface, was synthesized for the C1/C2 separation. The split ratio of C1/C2 was measured by measuring the quantity absorbed of CH₄, C₂H₄, and C₂H₆. The characterization was conducted for investigating the relationship between the quantity absorbed and the material properties.