Selective Oxidation of Methane to Oxygenates using Oxygen via Tandem Catalysis

Abstract

Selective oxidation of methane to oxygenates using low‐cost and environment‐friendly molecular oxygen (O2) under mild reaction conditions is a promising strategy but still remains grand challenge. It is of great importance to accelerate the activation of O2 to generate highly active oxygen species, such as hydroxyl peroxide and hydroxyl species to improve catalytic performance for selective oxidation of methane. Selective oxidation of methane using O2 by coupling with in situ generation of hydrogen peroxide via tandem catalysis ensures the easy formation of active oxygen species for methane activation, leading to high oxygenates productivity under mild conditions. In this concept, we summarized the recent progresses for selective oxidation of methane to oxygenates using O2 based on tandem catalysis by coupling with in situ generation of hydrogen peroxide. The remaining challenges and future perspectives for selective oxidation of methane to oxygenates via tandem catalysis were also proposed.

Simple Fabrication of Hydrophobicity-Controlled Fe-ZSM-5 for Aqueous-Phase Partial Oxidation of Methane with Hydrogen Peroxide

“…Inspired by enzymes (e.g., soluble and particulate methane monooxygenases) that can oxidize methane into methanol with dioxygen in the presence of reducing agents under ambient conditions [9], various biomimetic heterogeneous catalysts, such as Fe-and Cu-zeolites, have been examined for the aqueous-phase oxidation of methane with H 2 O 2 [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] or in situ-generated H 2 O 2 from H 2 and O 2 [28][29][30][31][32][33]. In addition to biomimetic heterogeneous catalysts, AuPd-based catalysts have recently been developed for this reaction [34][35][36][37][38][39][40]. These catalysts not only generate H 2 O 2 from H 2 and O 2 but can also activate the C-H bonds of methane with H 2 O 2 generated in situ to produce methane oxygenates, including methanol.…”