Mechanism of pore formation and structural characterization for mesoporous Mg-Al composite oxides

被引：15

作者：

Zhao, Y ^{[1
]}

Jiao, QZ ^{[1
]}

Evans, DG ^{[1
]}

Duan, X ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Minist Educ, Key Lab Sci & Technol Controllable Chem React, Beijing 100029, Peoples R China

来源：

SCIENCE IN CHINA SERIES B-CHEMISTRY | 2002年 / 45卷 / 01期

关键词：

layered double hydroxide; Mg-Al composite oxide; mesopore; crystal structure;

D O I：

10.1360/02yb9006

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

Mg-Al layered double hydroxides (LDH) with different particle sizes were prepared using different aging times at high supersaturation by a new method developed in our laboratory. The key features of this method are a very rapid mixing and nucleation process followed by a separate aging process. By calcination of LDH at 500degreesC, mesoporous Mg-Al composite oxides with an extremely narrow pore size distribution were produced. The crystal structure of the Mg-Al composite oxides was a multiphasic one consisting of MgO-like crystals and a layered material.

引用

页码：37 / 45

页数：9

共 15 条

[1]

Hydrotalcite decomposition mechanism: A clue to the structure and reactivity of spinel-like mixed oxides [J].