2024-03-28T09:03:34Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00006903
2022-12-13T02:20:13Z
1:87
STRUCTURE AND PHYSICOCHEMICAL PROPERTIES OF VACUUM-HEATED IRON PHOSPHATE GEL
ITOH, HIDENOBU
MORIOKA, HIROKI
KODAIRA, MOTOI
OKAZAKI, NORIYASU
TADA, AKIO
open access
Japanese Association of Inorganic Phosphorus Chemistry, H. Itoh, H. Morioka, M. Kodaira, N. Okazaki, A. Tada, Phosphorus Research Bulletin, 12, 2001, 105-110.
An iron phosphate gel prepared in organic solvents by the sol-gel method was heated in vacuo, and the structure, valence of the iron atoms, and electrical conductivity were investigated. It was found that the iron phosphate (FePO_4) gel containing carbonaceous deposits is easily reduced by heating in vacuo above 500 ℃ and crystallized as Fe_2P_2O_7. The gels evacuated at 500 ℃ and 700 ℃ contained different valence iron atoms, Fe^<2+> and Fe^<3+>, and showed semi-conductive characteristics. The electric conductivity of the gel evacuated at 700 ℃ was lower than that of Cr_2O_3, but higher than CoO.
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日本無機リン化学会
2001-12
eng
journal article
VoR
https://kitami-it.repo.nii.ac.jp/records/6903
Phosphorus Research Bulletin
12
105
110
https://kitami-it.repo.nii.ac.jp/record/6903/files/4473.pdf
application/pdf
2.8 MB
2016-11-22