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The catalytic activities of the atomic Y-, Ru-, At-, In-, Pd-, Ag-, Pt-, andOs- ions have been investigated theoretically using the atomic Au- ion as thebenchmark for the selective partial oxidation of methane to methanol withoutCO2 emission. Dispersion-corrected density-functional theory has been used forthe investigation. From the energy barrier calculations and the thermodynamicsof the reactions, we conclude that the catalytic effect of the atomic Ag-, At-,Ru-, and Os- ions is higher than that of the atomic Au- ion catalysis of CH4conversion to methanol. By controlling the temperature around 290K (Os-), 300K(Ag-), 310K (At-), 320K (Ru-) and 325K (Au-) methane can be completely oxidizedto methanol without the emission of CO2. We conclude by recommending theinvestigation of the catalytic activities of combinations of the above negativeions for significant enhancement of the selective partial oxidation of methaneto methanol.

Methane Oxidation to Methanol without CO2 Emission: Catalysis by Atomic Negative Ions