| 초록 |
We have prepared photocatalytic partial oxidation of dodecane system to produce oxygenated hydrocarbon and H2 for reducing NOx so that we can decrease NOx emission from diesel fuel vehicle. There are many photocatalytic partial oxidation results of short chain and aromatic hydrocarbon. And a few of reports exist regarding long chain alkane such as dodecane(tetrahedron 58 (2002) 2943-2950,Marine Chemisrty 58 (1997) 361-372). but these came from air-equilibrated aqueous TiO2 suspention system different from vehicle exhaust gas line environment in which there is lack of H2O compared with aqueous suspension batch system. In this circumstances, we conduct the experiments which resulted in CO2 formation and little amount of dodecane was partially oxidized to aldehydes whose selectivity seemed to be the highest among Oxygenated hydrocarbons(OHC). Scarce amounts of H2 also detected. To increase OHC selectivities, we will decrease oxygen composition. After finding optimized reaction condition, photocatalyst would be changed from commercial anatase phase TiO2 to surface modifided TiO2 or other materials such as MoO3, V2O5/SiO2. |
