Pretreating with Feedstock Improves Catalyst Perfomance

  • Author: Theresa Kueckmann
  • Published Date: 23 May 2012
  • Source / Publisher: Chemistry – An Asian Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Pretreating with Feedstock Improves Catalyst Perfomance

Partial oxidation of methane (POM) to CO is gaining importance as petroleum reserves dwindle. Cobalt-based catalysts are often used in this reaction, but they suffer from low activities and stabilities. Different calcination temperatures and various supports have been evaluated to overcome these disadvantages.

Chuan-Jing Huang and colleagues, Xiamen University, China, have found any easy way to improve the properties of cobalt-based catalysts for POM. After reduction of the calcined cobalt/alumina catalyst with H2 to give reactive cobalt metal, they pretreated the catalyst with feedstock gas (CH4/O2/Ar mixture) at 750 °C for 30 min. The pretreatment leads to higher methane conversion, better selectivity for CO, and better long-term stability. Characterization of the catalyst indicates that the pretreatment modifies the catalyst's surface structure to give Co metal that is highly dispersed in an α-Al2O3 phase, which results in the improved catalyst properties.

Image: © Wiley-VCH

Article Views: 3098

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH