Hydrothermal synthesis of potassium titanates in Ti-KOH-H2O system

Authors
Masaki, N Uchida, S Yamane, H Sato, T
Citation
N. Masaki et al., Hydrothermal synthesis of potassium titanates in Ti-KOH-H2O system, J MATER SCI, 35(13), 2000, pp. 3307-3311
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE
ISSN journal
00222461 → ACNP
Volume
35
Issue
13
Year of publication
2000
Pages
3307 - 3311
Database
ISI
SICI code
0022-2461(200007)35:13<3307:HSOPTI>2.0.ZU;2-A
Abstract
The hydrothermal oxidation of titanium metal powder was performed in concen trated potassium hydroxide solutions above 150 degrees C. K2Ti2O5, K4Ti3O8 and a new compound KTiO2(OH) were formed as single phase and fibrous amorph ous products which transformed to K2Ti4O9 and K2Ti6O13 and K2Ti2O5 by calci nation were also obtained depending on the reaction conditions. A formation diagram of products in the Ti-KOH-H2O system has been constructed at the r egion of KOH concentration from 0 to 90 mol.kg(-1)-H2O and the temperature from 150 to 350 degrees C. (C) 2000 Kluwer Academic Publishers.