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Trace mono-atomically dispersed rhodium on zeolite-supported cobalt catalyst for the efficient methane oxidation

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Title: Trace mono-atomically dispersed rhodium on zeolite-supported cobalt catalyst for the efficient methane oxidation
Authors: Hou, Yuhui Browse this author
Nagamatsu, Shinichi Browse this author
Asakura, Kiyotaka Browse this author →KAKEN DB
Fukuoka, Atsushi Browse this author →KAKEN DB
Kobayashi, Hirokazu Browse this author →KAKEN DB
Issue Date: 1-Aug-2018
Publisher: Nature Publishing Group
Journal Title: Communications Chemistry
Volume: 1
Start Page: UNSP 41
Publisher DOI: 10.1038/s42004-018-0044-9
Abstract: The partial oxidation of methane is a promising method for the efficient production of syngas. To implement this process using common stainless steel reactors, an inexpensive catalyst that functions at 650 degrees C or below is necessary. However, base metal catalysts typically require much higher temperatures, and they are deactivated by re-oxidation and coke formation. Here we report that modification of a zeolite-supported 3 wt% cobalt catalyst with a trace amount of mono-atomically dispersed rhodium (0.005 wt%) dramatically improves catalytic performance and durability. Cobalt/mordenite is nearly inactive due to the oxidation of cobalt, but the catalyst modified with rhodium continuously gives 85-86% methane conversion and 90-91% CO selectivity with an H-2/CO ratio of 2.0 without serious coking at 650 degrees C. During the reaction, mono-atomically dispersed rhodium converts cobalt oxide to Co-0 active species via hydrogen spillover. Use of the zeolite support is key to the high catalytic performance.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/71974
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小林 広和

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