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Title: Nanocrack Formation in Hematite through the Dehydration of Goethite and the Carbon Infiltration from Biotar
Authors: Kashiwaya, Yoshiaki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-7106-4018 (unconfirmed)
Akiyama, Tomohiro
Author's alias: 柏谷, 悦章
Issue Date: 2010
Publisher: Hindawi Publishing Corporation
Journal title: Journal of Nanomaterials
Volume: 2010
Start page: 1
End page: 12
Thesis number: 235609
Abstract: The cracks in nano-order are generated and propagated when the combined water is released during the dehydration. If the nanopore can be utilized for a reaction site, the overall reaction can be extremely accelerated. On the other hand, it is well known that woody biomass is an attractive alternative fuel for the reduction of CO2 emission. However, the process of biomass pyrolysis is disturbed by the tar which causes a clogging in gas tubing system. Hata et al. found that the tar was consumed almost 100% in the iron ore layer having nanocrack or nanopore. The nanocracks formed in hematite crystals after dehydration of goethite were about 4 nm in width, which is in excellent agreement with the result of BET measurement. When the carbon deposited from tar into the nanocracks, reduction reactions were occurred simultaneously. The deposited carbons completely infilled into the nanocracks and the void in the sample.
Rights: © 2010 Yoshiaki Kashiwaya and Tomohiro Akiyama. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
URI: http://hdl.handle.net/2433/131853
DOI(Published Version): 10.1155/2010/235609
Appears in Collections:Journal Articles

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