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  Nanoporous Carbon: Liquid-Free Synthesis and Geometry-Dependent Catalytic Performance

Xu, R., Kang, L., Knossalla, J., Mielby, J., Wang, Q., Wang, B., et al. (2019). Nanoporous Carbon: Liquid-Free Synthesis and Geometry-Dependent Catalytic Performance. ACS Nano, 13(2), 2463-2472. doi:10.1021/acsnano.8b09399.

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 Creators:
Xu, Ruoyu1, Author
Kang, Liqun1, Author
Knossalla, Johannes2, Author              
Mielby, Jerrik3, Author
Wang, Qiming1, Author
Wang, Bolun1, Author
Feng, Junrun1, Author
He, Guanjie4, Author
Qin, Yudao4, Author
Xie, Jijia1, Author
Swertz, Ann-Christin5, Author              
He, Qian6, Author
Kegnæs, Søren3, Author
Brett, Dan J. L.1, Author
Schüth, Ferdi2, Author              
Wang, Feng Ryan1, Author
Affiliations:
1Department of Chemical Engineering, University College London, Torrington Place, WC1E 7JE London, United Kingdom, ou_persistent22              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
3Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark, ou_persistent22              
4Department of Chemistry, University College London, 20 Gordon Street, Bloomsbury, WC1H 0AJ London, United Kingdom, ou_persistent22              
5Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              
6Cardiff Catalyst Institute, School of Chemistry, Cardiff University, CF10 3AT Cardiff, United Kingdom, ou_persistent22              

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Free keywords: biomass conversion; hydrogen evolution reaction; liquid-free synthesis; nanoporous carbon; pore geometry
 Abstract: Nanostructured carbons with different pore geometries are prepared with a liquid-free nanocasting method. The method uses gases instead of liquid to disperse carbon precursors, leach templates, and remove impurities, minimizing synthetic procedures and the use of chemicals. The method is universal and demonstrated by the synthesis of 12 different porous carbons with various template sources. The effects of pore geometries in catalysis can be isolated and investigated. Two of the resulted materials with different pore geometries are studied as supports for Ru clusters in the hydrogenolysis of 5-hydroxymethylfurfural (HMF) and electrochemical hydrogen evolution (HER). The porous carbon-supported Ru catalysts outperform commercial ones in both reactions. It was found that Ru on bottleneck pore carbon shows a highest yield in hydrogenolysis of HMF to 2,5-dimethylfuran (DMF) due to a better confinement effect. A wide temperature operation window from 110 to 140 °C, with over 75% yield and 98% selectivity of DMF, has been achieved. Tubular pores enable fast charge transfer in electrochemical HER, requiring only 16 mV overpotential to reach current density of 10 mA·cm-2.

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Language(s): eng - English
 Dates: 2018-12-122019-01-162019-01-162019-02-26
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acsnano.8b09399
 Degree: -

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Title: ACS Nano
  Other : ACS Nano
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 13 (2) Sequence Number: - Start / End Page: 2463 - 2472 Identifier: ISSN: 1936-0851
CoNE: https://pure.mpg.de/cone/journals/resource/1936-0851