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Binding Energy of Carbon Implanted into Hematite and in situ Observation of Reaction Behavior during Heating Up Experiment

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ISIJ Int. 51(8)_ 1204-1212 (2011).pdf1.94 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/75174

Title: Binding Energy of Carbon Implanted into Hematite and in situ Observation of Reaction Behavior during Heating Up Experiment
Authors: Kashiwaya, Yoshiaki Browse this author
Nakamitsu, Tsuyoshi Browse this author
Kinoshita, Hiroshi Browse this author
Miura, Seiji Browse this author →KAKEN DB
Keywords: direct reduction
reaction with solid carbon
XPS
binding energy
Issue Date: 15-Aug-2011
Publisher: Iron and Steel Institute of Japan
Journal Title: ISIJ International
Volume: 51
Issue: 8
Start Page: 1204
End Page: 1212
Publisher DOI: 10.2355/isijinternational.51.1204
Abstract: It is widely known that the direct contact between solid carbon and iron oxide shows quite a fast reduction rate in comparison with CO gas reduction. However, it is difficult to sustain the physical contact between solid carbon and iron oxide. Furthermore, the contact mode will be different from the production method, which will affect the reaction kinetics strongly. In this study, different kinds of contacts between solid carbon and hematite were made to clarify the reaction mechanism. One contact mode is the deposition of the carbon layer on the hematite surface using a vacuum evaporation method. Another method is the implantation of carbon ions into hematite. Using XPS (X-ray photoelectron spectroscopy), the binding energy of Fe–O–C was measured. Heating under an argon atmosphere was carried out. Both samples showed quite different reaction behavior, though the temperature at the beginning of the reduction reaction was almost the same. From these results, it was determined that the position of carbon will change the reaction behavior drastically, because it is important how the CO gas escapes from the reaction site.
Type: article
URI: http://hdl.handle.net/2115/75174
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 三浦 誠司

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