“…Oxygen is anonmetallic oxidant with ahigh reactivity and low toxicity that possesses the ability to readily form various oxides with most elements and compounds.Oxygen is widely used as the oxidant in av ariety of oxidation reactions, including the photooxidation of methane. [20,21,26,30,31,36,55,[101][102][103][104] Themain reactions of the methane-oxygen system are TOM and POM. TOM offers the possibility of efficiently removing trace amounts of methane,while POM offers an eco-friendly way to produce syngas,C 2 hydrocarbons,a nd oxygenates at RT and ambient pressure.…”