Fe 2 O 3 를 포함한 78V 2 O 5 -15P 2 O 5 -7B 2 O 3 계 유리의 결정화에 따른 전기 전도도와 촉매특성의 상관관계

In this study, we established a correlation between the electrical conductivity and catalytic properties of vanadium borophosphate glass containing Fe2O3. Glasses were synthesized in the 78V2O5- 15P2O5-7B2O3 ternary-system containing x mol% Fe2O3 (x = 1, 5, 7.5, and 10). Electrical conductivity was...

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Bibliographic Details
Published in대한금속재료학회지 Vol. 54; no. 12; pp. 931 - 936
Main Authors 정화진, Hwa-jin Jeong, 김종환, Jong-hwan Kim, 류봉기, Bong-ki Ryu
Format Journal Article
LanguageKorean
Published 대한금속재료학회 05.12.2016
Subjects
catalytic property
crystallization
electrical conductivity
polaron
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Summary:In this study, we established a correlation between the electrical conductivity and catalytic properties of vanadium borophosphate glass containing Fe2O3. Glasses were synthesized in the 78V2O5- 15P2O5-7B2O3 ternary-system containing x mol% Fe2O3 (x = 1, 5, 7.5, and 10). Electrical conductivity was measured at 45 ℃ for samples heat-treated at 340 ℃ for 12 h. To examine catalytic effects, we used TGA measurements of a mixture of fatty acid and sample powders. Fourier transform infrared spectroscopy (FTIR) was used to analyze the structural changes after crystallization, while X-ray photoelectron spectroscopy (XPS) analysis indicated changes with different valence state ions. X-ray diffraction (XRD) analysis of the structure array verified these inferred changes. Conductivity and catalytic effects are discussed in relation to the migration of vanadate ions and iron ions with different valence states due to the increase crystallinity. †(Received May 10, 2016; Accepted June 7, 2016)
Bibliography:The Korean Institute of Metals and Materials
ISSN:1738-8228