Investigation on the reaction mechanism and influence of the calcination conditions on partial oxidation of methane over Ru based catalyst

摘要

Introduction Notwithstanding the big number of studies on partial oxidation of methane (CPO), the mechanism that leads to the formation of CO and H2 is not fully clarified, yet. There are two different reaction mechanisms proposed: one is the direct pathway in which CH4 and O2 adsorb on the catalyst and then give CO and H2 [1]; the second one is the so called "combustion and reforming mechanism" (CRM). According to this one, CH4 and O2 first form CO2 and water following a complete combustion pathway; afterwards steam and dry reforming (SR and DR) occur forming CO and H2.