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Hydrothermal synthesis of K4Nb6O17 (1998)

Uchida, Satoshi ; Inoue, Yuichi ; Fujishiro, Yoshinobu ; [et al.]

Springer

Journal of materials science 33 (1998), S. 5125-5129

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ISSN: 1573-4803

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1004411315906

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