| 초록 |
Methane chlorination is one of the energy-efficient chemical processes to produce valuable materials such as light olefins from methane. Selective production of methyl chloride (CH3Cl) among the possible products (e.g., CH3Cl, CH2Cl2, CHCl3, and CCl4) is important because CH3Cl can be used as an intermediate for producing light olefins. In the reaction process, there are two pathways to synthesize CH3Cl. One is the radical pathway and another is the electrophilic pathway. In the radical pathway, it can convert methane to CH3Cl, but it leads to a mixture of overchlorinated products. Accordingly, the electrophilic pathway is preferable because the selectivity of CH3Cl is controllable. However, methane chlorination is difficult to control due to the competition of radical pathway and electrophilic pathway. Herein, we used various transition metal ion-exchanged Y zeolites to make the electrophilic pathway dominant. We confirmed that the CH4 conversion rate and chloromethane selectivity can be controlled depending on the type of metal ions through experimental and theoretical studies. Detailed discussion on results is going to be demonstrated in the poster. |
