A comprehensive review on catalytic oxidation of methane in the presence of molecular oxygen: total oxidation, partial oxidation and selective oxidation
Dharmesh M. Vadodaria, Ahmed S. Al‐Fatesh, Maher M. Alrashed, Mansour Alhoshan, Ahmed A. Ibrahim, Nadavala Siva Kumar, Rawesh Kumar
Abstract
CH4, a highly potent greenhouse gas, can be oxidized under O2 through total, partial, and selective oxidation of methane (presented as TOM, POM, and SOM). This review integrates all three methane oxidation reactions carried out over non-noble metal-based catalysts, puts an overview on catalyst selection, provides a unified view on reaction mechanism, justifies the discussions over catalytic activity with physico-chemical properties and presents the catalytic outcome from beginning to excellence level. Catalysts specified for low-temperature oxidation (< 400°C) in TOM, high H2 yield ( > 95%) in POM, and high methanol/formaldehyde selectivity in SOM are considerable for futuristic research.