Effect of thermal treatment on the stability of Na–Mn–W/SiO<sub>2</sub> catalyst for the oxidative coupling of methane
D. Matras, Antonis Vamvakeros, Simon D. M. Jacques, Nicolas Grosjean, Benjamin Rollins, Stephen Poulston, Gavin B. G. Stenning, Hamid Reza Godini, Jakub Drnec, Robert J. Cernik, Andrew M. Beale
Abstract
conversion. Under operating conditions, the active components, present in the form of a Na-W-O-Mn molten state, are highly mobile and volatile. By varying the parameters of the calcination protocol, it was shown that these molten components can be partially stabilised, resulting in a catalyst with lower activity (due to loss of surface area) but higher stability even for long duration OCM reaction experiments.
Topics & Concepts
CalcinationCatalysisOxidative coupling of methaneMethaneThermal stabilitySynchrotronCoupling (piping)Materials scienceThermalInorganic chemistryChemistryChemical engineeringMetallurgyThermodynamicsPhysicsOrganic chemistryEngineeringNuclear physicsCatalysis and Oxidation ReactionsCatalytic Processes in Materials ScienceMagnetic and transport properties of perovskites and related materials