Microstructure of La-modified Al2O3 support with LaAlO3 nano-particles

被引：7

作者：

Nishio, Yoshitoyo ^{[1
]}

Ozawa, Masakuni ^{[1
]}

机构：

[1] Nagoya Inst Technol, Ceram Res Lab, Tajimi, Gifu 5070071, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2008年 / 116卷 / 1360期

关键词：

Alumina; Catalyst support; Lanthanum; Solid-state reaction; Nano-particle;

D O I：

10.2109/jcersj2.116.1295

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Lanthanum modified gamma-alumina support that embedded highly dispersed LaAlO3 nano-particles in gamma-alumina matrix were prepared by an impregnation process using aqueous lanthanum (III) nitrate. 5 mol% La added alumina was heated in the temperature range of 600-1200 degrees C and characterized by surface area measurement, X-ray powder diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM). The added lanthanum should react with gamma-Al2O3 to form LaAlO3 nano-particles in the secondary particle of alumina. LaAlO3 nano-particles with an average crystallite size of about 11 mm were found after heat treatment at 800 degrees C, and the crystallite size or LaAlO3 nano-particles increased with the rise of heat treatment temperature. (c) 2008 The Ceramic Society of Japan. All rights reserved.

引用

页码：1295 / 1298

页数：4

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