Crystallization of amorphous hydrous titania under hydrothermal hot-pressing conditions

Kazumichi Yanagisawa, Koji Ioku, Nakamichi Yamasaki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Amorphous hydrous titania prepared by hydrolysis of tetraethylorthotitanate was crystallized to anatase under hydrothermal hot-pressing conditions. Crystallization occurred even at 100 °C. The hydrothermal hot-pressing conditions changed crystallite size of anatase. Reaction pressure had no effect on the crystallite size. Increase in reaction temperature and reaction time up to 60 min, increased the crystallite size by growth of anatase nuclei by the dissolution and deposition mechanism. Increase in water content of hydrous titania decreased the crystallite size. The presence of water accelerated the nucleation of anatase.

Original languageEnglish
Pages (from-to)1091-1093
Number of pages3
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume102
Publication statusPublished - 1994 Nov
Externally publishedYes

Fingerprint

hot pressing
Hot pressing
Crystallite size
Crystallization
anatase
Titanium dioxide
titanium
Titanium
crystallization
reaction time
Water content
moisture content
hydrolysis
Hydrolysis
dissolving
Dissolution
Nucleation
nucleation
nuclei
titanium dioxide

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Crystallization of amorphous hydrous titania under hydrothermal hot-pressing conditions. / Yanagisawa, Kazumichi; Ioku, Koji; Yamasaki, Nakamichi.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 102, 11.1994, p. 1091-1093.

Research output: Contribution to journalArticle

@article{e410df1ca1e04211afd441e43a5dedf5,
title = "Crystallization of amorphous hydrous titania under hydrothermal hot-pressing conditions",
abstract = "Amorphous hydrous titania prepared by hydrolysis of tetraethylorthotitanate was crystallized to anatase under hydrothermal hot-pressing conditions. Crystallization occurred even at 100 °C. The hydrothermal hot-pressing conditions changed crystallite size of anatase. Reaction pressure had no effect on the crystallite size. Increase in reaction temperature and reaction time up to 60 min, increased the crystallite size by growth of anatase nuclei by the dissolution and deposition mechanism. Increase in water content of hydrous titania decreased the crystallite size. The presence of water accelerated the nucleation of anatase.",
author = "Kazumichi Yanagisawa and Koji Ioku and Nakamichi Yamasaki",
year = "1994",
month = "11",
language = "English",
volume = "102",
pages = "1091--1093",
journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
issn = "0914-5400",
publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

}

TY - JOUR

T1 - Crystallization of amorphous hydrous titania under hydrothermal hot-pressing conditions

AU - Yanagisawa, Kazumichi

AU - Ioku, Koji

AU - Yamasaki, Nakamichi

PY - 1994/11

Y1 - 1994/11

N2 - Amorphous hydrous titania prepared by hydrolysis of tetraethylorthotitanate was crystallized to anatase under hydrothermal hot-pressing conditions. Crystallization occurred even at 100 °C. The hydrothermal hot-pressing conditions changed crystallite size of anatase. Reaction pressure had no effect on the crystallite size. Increase in reaction temperature and reaction time up to 60 min, increased the crystallite size by growth of anatase nuclei by the dissolution and deposition mechanism. Increase in water content of hydrous titania decreased the crystallite size. The presence of water accelerated the nucleation of anatase.

AB - Amorphous hydrous titania prepared by hydrolysis of tetraethylorthotitanate was crystallized to anatase under hydrothermal hot-pressing conditions. Crystallization occurred even at 100 °C. The hydrothermal hot-pressing conditions changed crystallite size of anatase. Reaction pressure had no effect on the crystallite size. Increase in reaction temperature and reaction time up to 60 min, increased the crystallite size by growth of anatase nuclei by the dissolution and deposition mechanism. Increase in water content of hydrous titania decreased the crystallite size. The presence of water accelerated the nucleation of anatase.

UR - http://www.scopus.com/inward/record.url?scp=0028547810&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028547810&partnerID=8YFLogxK

M3 - Article

VL - 102

SP - 1091

EP - 1093

JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

SN - 0914-5400

ER -