| 초록 |
Over the last decades, direct methane conversion to methanol has been receiving attentions in the scientific and industrial community. However, due to the lower C-H bond-dissociation energy of methanol than methane, the formation of methanol in high yield is almost an infeasible target. In order to overcome this issue, one of the best strategy is converting methane to methanol precursors such as methyl bisulfate(MBS) or methyl trifluoroacetate(MeTFA). In this study, various Pd catalysts such as Pd(0), PdCl2, PdBr2, and K2PdCl4 were used for the oxidation of methane to MeTFA in the presence of K2S2O8 oxidant and trifluoroacetic acid solvent. Among the tested Pd catalysts, PdCl42- showed higher catalytic activity presumably due to the high solubility in TFA. The mechanism of this reaction was also expected using the DFT calculation. |
