Progress in the direct catalytic conversion of methane to fuels and chemicals

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• 作者：Canan Karakaya ; Robert J. Kee ; ^{rjkee@mines.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Methane activation ; Membranes ; Catalytic chemistry ; Gas to liquids ; Process intensification
• 刊名：Progress in Energy and Combustion Science
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：55
• 期：Complete
• 页码：60-97
• 全文大小：4815 K

文摘

This paper reviews the state-of-the-art in catalytic processes to convert methane (a major component of natural gas) to more valuable hydrocarbons as fuels or chemicals. The scope is restricted to “direct” conversion, meaning that processes involving synthesis gas as an intermediate are not considered. Oxygenated products (e.g., alcohols) are also not considered. In all cases, the processes are concerned with catalytic dehydrogenation. The two most widely studied processes are oxidative coupling of methane (OCM) and methane dehydroaromatization (MDA). After reviewing the relevant catalysis literature, the paper goes on to review reactor implementations. Hydrogen- and/or oxygen-permeable membranes can potentially play valuable roles in improving methane conversion and product yields. Despite over 30 years of research, there are still no direct-conversion processes that can compete commercially with methane reforming followed by processes such as Fischer–Tropsch synthesis. Thus, the future practical development and deployment of OCM and MDA will rely on the research and development of advanced catalysts and innovative processes. The present review helps to document the foundation on which the needed development can build.