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Trace mono-atomically dispersed rhodium on zeolite-supported cobalt catalyst for the efficient methane oxidation
This item is licensed under:Creative Commons Attribution 4.0 International
| 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)
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Submitter: 小林 広和
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