Green energy driven methane conversion under mild conditions

EES catalysis Pub Date : 2024-09-11 DOI:10.1039/D4EY00155A
Jiakang You, Yifan Bao, Yanzhao Zhang, Muxina Konarova, Zhiliang Wang and Lianzhou Wang
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Abstract

Methane is a critical energy resource but also a potent greenhouse gas, significantly contributing to global warming. To mitigate the negative effect of methane, it is meaningful to explore an effective methane conversion process motivated with green energy such as green electricity and sunlight. The selectivity and production rate are the key criteria in methane conversion. This review provides a comprehensive overview of recent efforts and understanding in methane conversion to valuable products, including oxygenates and hydrocarbons, by taking advantage of electrocatalysis and photocatalysis. The review begins with a general understanding of C–H bond activation mechanisms. It then focuses on electrocatalytic methane conversion (EMC) with an emphasis on catalyst design for oxygenate production, and photocatalytic methane conversion (PMC) with a particular focus on hydrocarbon production, especially ethylene (C2H4), due to the differences in oxygen sources between the two systems. An in-depth understanding of EMC and PMC mechanisms is also discussed to provide insights for improved catalyst design aimed at selective product generation. Finally, successful catalyst designs for EMC and PMC are summarized to identify challenges in achieving highly efficient and selective production of value-added chemicals and to offer clear guidance for future research efforts in green methane conversion.

Abstract Image

温和条件下的绿色能源驱动甲烷转化
甲烷是全球能源供应的 "珍纳斯",它对大气的加热能力很强,因此会导致全球变暖。为了解决甲烷的负面影响,探索一种以绿色能源(如绿色电力和阳光)为动力的有效甲烷转化工艺非常有意义。选择性和生产率是甲烷转化的关键标准。本综述全面概述了近年来利用电催化和光催化技术将甲烷转化为有价值产品(包括含氧化合物和碳氢化合物)的工作和认识。从对 C-H 键活化机制的一般理解开始,电催化甲烷转化(EMC)将侧重于含氧化合物生产的催化剂设计,而光催化甲烷转化(PMC)则侧重于碳氢化合物,由于这两种系统中氧源的不同,其重点是 C2H4 的生产。对 EMC 和 PMC 机理的深入理解也为更好地设计催化剂以生产选择性产品提供了启示。总之,本综述总结了一些成功的 EMC 和 PMC 催化剂设计,以及高效和选择性增值化学品生产所面临的挑战,为进一步研究绿色甲烷转化的新知识提供了明确的指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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