Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts

The plasma-catalytic oxidation of soot was studied over zeolite-supported vanadium catalysts, while four types zeolites (MCM-41, mordenite, USY and 5A) were used as catalyst supports. rate followed the order V/MCM-41 > V/mordenite V/USY V/5A, 100% achieved at 54th min reaction V/mordenite. CO2 selectivity process follows opposite V/M catalyst. A wide range characterizations including N2 adsorption–desorption, XRD, XPS, H2-TPR O2-TPD performed to obtain insights regarding mechanisms in systems. redox properties recognized be crucial for process. effects discharge power, gas flow temperature on also investigated. results showed that higher lower beneficial rate. However, these factors would impose a negative effect selectivity. proposed “plasma-catalysis” method possessed unique advantages quick response, mild operation conditions system compactness. could potentially applied regeneration diesel particulate filters (DPF) low temperatures contribute emission control engines.