Non-Oxidative Coupling of Methane: Interplay of Catalyst Interface and Gas Phase Mechanisms

Non-oxidative coupling of methane (NOCM) is a sought-after reaction that has been studied for de-cades. Harsh reaction conditions (T >800 degrees C) in the face of limited catalyst stability lead to rapid catalyst deactiva-tion and strong coking, preventing application thus far. Recent reports have shown the significance of an interplay of catalyst nature and reaction conditions, whereas metal carbides have prevailed to play a crucial role which involves incorporation of carbidic carbon in C2Hx and aromatic products. This perspective gives an overview of proposed mechanistic pathways and considerations about experiment conditions in order to foster a rational catalyst design platform for NOCM.

Automated summary

Non-oxidative coupling of methane (NOCM) is a highly researched reaction that is hindered by harsh reaction conditions and limited catalyst stability. Recent studies have highlighted the importance of catalyst nature and reaction conditions, with metal carbides playing a key role in the incorporation of carbidic carbon. This perspective provides an overview of proposed mechanistic pathways and considerations for experiment conditions, aiming to facilitate a rational catalyst design platform for NOCM.