Silica‐Enveloped 2D‐Sheet‐to‐Nanocrystals Conversion for Resilient Catalytic Dry Reforming of Methane
SCIE
SCOPUS
- Title
- Silica‐Enveloped 2D‐Sheet‐to‐Nanocrystals Conversion for Resilient Catalytic Dry Reforming of Methane
- Authors
- Jang, Sun Woo; Dutta, Soumen; Kumar, Amit; Kim, Soo Min; You, Young‐Woo; Lee, In Su
- Date Issued
- 2021-08
- Publisher
- Wiley - V C H Verlag GmbbH & Co.
- Abstract
- Here, lamellar confinement strategy is introduced for "sheet-to-nanocrystals (NCs)" conversion within a 2D-SiO2 envelope, which constructs a catalytic nanocartridge holding a platoon of isolated and in-plane-aligned ultrasmall Ni-NCs, performing as a robust and coking-resistant catalytic system for dry reforming of methane. Overcoming the problem of unavoidable bulk crystal growth from multiple sheets-stack or sheet-on-open-support, silica bilayer-encasing tightly clamps the atomic-thin Ni(OH)(2)-nanosheet during thermal conversion and further hinders the migratory fusion of the resultant Ni-NCs. Upon heating-cooling cycle, the flapping silica envelope clutches the Ni-NCs like "eggs in a carton," subsequently, ensuring their thermal stability. Owing to the unique 2D-enveloped rigid architecture, Ni-NCs can circumvent sintering and coke deposition while tolerating the high temperatures (>700 degrees C) for long operation (>100 h), affording high conversions to syngas.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/106804
- DOI
- 10.1002/smll.202102851
- ISSN
- 1613-6810
- Article Type
- Article
- Citation
- Small, vol. 17, no. 34, page. 2102851, 2021-08
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- There are no files associated with this item.
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