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The combination of Pt~(2+),benzoquinone and NaNO_2 forms an electron-transfer chain,which leads to the oxidation of methane by O_2 in CF_3COOH aqueous solution.The overall turnover number per hour (TOF) of methane at 120℃is 0.5 h~(-1),however,only about one fourth (23%) of methane is converted to the desired product of methanol in the formation of CF_3COOCH_3.The over-oxidation of methane to CO_2,over the catalyst with the Pt~(2+) species immobilized via 2,2’-bipyridyl as a ligand on the silica substrate,is depressed distinctly.Under the same conditions,the conversion to methanol dominates, and no CO_2 is observed,on account of the over-oxidation of methane,as confirmed by the isotope experiment.
The combination of Pt ~ (2 +), benzoquinone and NaNO_2 forms an electron-transfer chain, which leads to the oxidation of methane by O_2 in CF_3COOH aqueous solution. The overall turnover number per hour (TOF) of methane at 120 ° C is 0.5 However, only about one fourth (23%) of methane is converted to the desired product of methanol in the formation of CF_3COOCH_3. The over-oxidation of methane to CO_2, over the catalyst with the Pt ~ ( 2+) species immobilized via 2,2’-bipyridyl as a ligand on the silica substrate, is depressed distinctly. Under the same conditions, the conversion to methanol dominates, and no CO_2 is observed, on account of the over-oxidation of methane , as confirmed by the isotope experiment.