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dc.contributor.authorKatasho, Yumi
dc.contributor.authorYang, Xiao
dc.contributor.authorYasuda, Kouji
dc.contributor.authorNohira, Toshiyuki
dc.contributor.alternative片所, 優宇美
dc.contributor.alternative楊, 肖
dc.contributor.alternative安田, 幸司
dc.contributor.alternative野平, 俊之
dc.description.abstractThe electrochemical reduction behavior of borosilicate glass, which is the main component of vitrified radioactive waste, was investigated in molten CaCl₂ at 1123 K to establish a new nuclear waste disposal procedure. Cyclic voltammetry of borosilicate and silica glasses suggested that the reduction of B₂O₃ in borosilicate glass occurred at a more positive potential than that of SiO₂. X-ray photoelectron spectroscopy confirmed that the B₂O₃ component was reduced to B or a B-Si compound at 0.9 V vs. Ca²⁺/Ca. The reduction products prepared by the potentiostatic electrolysis of borosilicate glass at 0.9 V had granular morphology and consisted of crystalline Si. The Al₂O₃ component was not reduced at 0.9 V and the Na₂O component was suggested to be dissolved in molten CaCl₂ during electrolysis.
dc.publisherElectrochemical Society Inc.
dc.rights© The Electrochemical Society, Inc. 2016. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc. 2016 volume 163, issue 10, D622-D627.
dc.rightsThis is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
dc.subjectborosilicate glass
dc.subjectelectrochemical reduction
dc.subjectmolten salt
dc.subjectvitrified radioactive wastes
dc.titleElectrochemical reduction behavior of borosilicate glass in molten CaCl₂
dc.type.niitypeJournal Article
dc.identifier.jtitleJournal of the Electrochemical Society
dc.addressInstitute of Advanced Energy, Kyoto University
dc.addressInstitute of Advanced Energy, Kyoto University
dc.addressAgency for Health, Safety and Environment, Kyoto University・Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University
dc.addressInstitute of Advanced Energy, Kyoto University
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