Low-temperature oxidative coupling of methane: A review

The oxidative coupling of methane (OCM) has garnered significant interest as an effective technology for the direct upgrading of methane. However, the associated high temperatures and over-oxidation of the desired products have limited its large-scale application. This article reviews current strategies for low-temperature OCM reactions (T ≤ 700 °C), including the promotion of ·CH 3 generation, the introduction of surface coupling of ·CH 3 , and other engineering approaches. The summary outlines pertinent strategies and challenges that are anticipated to inspire future research in the design of low-temperature OCM catalysts.