EVALUATION OF SINTERING OF NANOMETER-SIZED TITANIA USING AEROSOL METHOD

被引：117

作者：

SETO, T ^{[1
]}

SHIMADA, M ^{[1
]}

OKUYAMA, K ^{[1
]}

机构：

[1] HIROSHIMA UNIV,DEPT CHEM ENGN,HIGASHIHIROSHIMA 724,JAPAN

来源：

AEROSOL SCIENCE AND TECHNOLOGY | 1995年 / 23卷 / 02期

基金：

日本学术振兴会;

关键词：

D O I：

10.1080/02786829508965303

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The sintering of titania agglomerates consisting of nanometer primary particles in a heated gas flow is investigated under gas temperatures from room temperature to 1673 K. The test titania agglomerates are produced by thermal decomposition or hydrolysis of TTIP (titanium tetraisopropoxide) vapor. The size changes of the agglomerates of 30-100 nm in diameter are measured using a TDMA (Tandem Differential Mobility Analyzer) system. At a temperature lower than about 1000 K, the agglomerates do not change in size with increasing heating temperature, but a sudden decrease in size is detected at 1000 to 1500 and From TEM observation, densification of agglomerates accompanying primary particle growth is observed. These experimental results for the rate of reduction in surface area are explained quantitatively by solving the basic equation of sintering under the calculated temperature profile.

引用

页码：183 / 200

页数：18

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