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Received April 19, 2018
Accepted July 4, 2018
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Thermal Oxidative Purification of Detonation Nanodiamond in a Gas-Solid Fluidized Bed Reactor

Department of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Korea 1NanoResource Co., Ltd, 1201, Star valley, 99, Digital-ro 9-gil, Geumcheon-gu, Seoul, 08510, Korea
dhlee@skku.edu
Korean Chemical Engineering Research, October 2018, 56(5), 738-751(14), 10.9713/kcer.2018.56.5.738 Epub 5 October 2018
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Abstract

The effect of the reaction temperature and reaction time on the thermal oxidative purification quality of detonation nanodiamond (NDsoot) was investigated in a gas-solid fluidized bed reactor of a 0.10 m-ID × 1.0 m-high stainless steel column with zirconia beads (dSV = 99.2 μm). The carbon conversion increased with increasing the reaction temperature; however, when the reaction temperature was greater than 773 K, the carbon conversion did not increase. The content of sp3-hybridized carbon at the reaction temperature of 703 K barely changed when the reaction time was more than 30 minutes, but at 773 K, the content decreased as preferred. At 703 K, the purification quality increased with the increasing reaction time; however, at 773 K, the purification quality increased up to 30 minutes and then decreased rapidly.

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