Hydrothermal synthesis of K4Nb6O17

Satoshi Uchida; Yuichi Inoue; Yoshinobu Fujishiro; Tsugio Sato

doi:10.1023/A:1004411315906

Hydrothermal synthesis of K₄Nb₆O₁₇

Satoshi Uchida, Yuichi Inoue, Yoshinobu Fujishiro, Tsugio Sato

Division of Organic- and Biomaterials Research

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

A new approach for the synthesis of K₄Nb₆O₁₇·3H₂O by hydrothermal method was examined using different alkaline solutions such as Nb₂O₅-KOH-NaOH-H₂O, Nb₂O₅-KOH-NH₄OH-H₂O and Nb₂O₅-KOH-H₂O. K₄Nb₆O₁₇·3H₂O was formed as single phase in Nb₂O₅-KOH-H₂O system in the region of KOH concentration 1.0-1.5 m and temperature 220-285°C. KNbO₃ was also formed as single phase in 3.0 m KOH solutions above 250°C. Addition of methanol was useful to decrease the particle size and increase the specific surface area of K₄Nb₆O₁₇·3H₂O.

Original language	English
Pages (from-to)	5125-5129
Number of pages	5
Journal	Journal of Materials Science
Volume	33
Issue number	21
DOIs	https://doi.org/10.1023/A:1004411315906
Publication status	Published - 1998

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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title = "Hydrothermal synthesis of K4Nb6O17",

abstract = "A new approach for the synthesis of K4Nb6O17·3H2O by hydrothermal method was examined using different alkaline solutions such as Nb2O5-KOH-NaOH-H2O, Nb2O5-KOH-NH4OH-H2O and Nb2O5-KOH-H2O. K4Nb6O17·3H2O was formed as single phase in Nb2O5-KOH-H2O system in the region of KOH concentration 1.0-1.5 m and temperature 220-285°C. KNbO3 was also formed as single phase in 3.0 m KOH solutions above 250°C. Addition of methanol was useful to decrease the particle size and increase the specific surface area of K4Nb6O17·3H2O.",

author = "Satoshi Uchida and Yuichi Inoue and Yoshinobu Fujishiro and Tsugio Sato",

year = "1998",

doi = "10.1023/A:1004411315906",

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pages = "5125--5129",

journal = "Journal of Materials Science",

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publisher = "Springer Netherlands",

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T1 - Hydrothermal synthesis of K4Nb6O17

AU - Uchida, Satoshi

AU - Inoue, Yuichi

AU - Fujishiro, Yoshinobu

AU - Sato, Tsugio

PY - 1998

Y1 - 1998

N2 - A new approach for the synthesis of K4Nb6O17·3H2O by hydrothermal method was examined using different alkaline solutions such as Nb2O5-KOH-NaOH-H2O, Nb2O5-KOH-NH4OH-H2O and Nb2O5-KOH-H2O. K4Nb6O17·3H2O was formed as single phase in Nb2O5-KOH-H2O system in the region of KOH concentration 1.0-1.5 m and temperature 220-285°C. KNbO3 was also formed as single phase in 3.0 m KOH solutions above 250°C. Addition of methanol was useful to decrease the particle size and increase the specific surface area of K4Nb6O17·3H2O.

AB - A new approach for the synthesis of K4Nb6O17·3H2O by hydrothermal method was examined using different alkaline solutions such as Nb2O5-KOH-NaOH-H2O, Nb2O5-KOH-NH4OH-H2O and Nb2O5-KOH-H2O. K4Nb6O17·3H2O was formed as single phase in Nb2O5-KOH-H2O system in the region of KOH concentration 1.0-1.5 m and temperature 220-285°C. KNbO3 was also formed as single phase in 3.0 m KOH solutions above 250°C. Addition of methanol was useful to decrease the particle size and increase the specific surface area of K4Nb6O17·3H2O.

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Hydrothermal synthesis of K₄Nb₆O₁₇

Abstract

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