Conversion of elemental mercury with a novel membrane catalytic system at low temperature

► A unique catalytic system (MDCOs) was used to convert Hg0 to Hg2+. ► The conversion efficiency of Hg0 reached 95% with Mo-Ru-Mn catalyst. ► The inhibition of SO2 against the conversion of Hg0 was insignificant. ► The Deacon reaction in MDCOs was accelerated remarkably by Mo-Ru.