Effect of the mixing procedure on aluminium (oxide)-hydroxide obtained by precipitation of aluminium nitrate with soda

被引：20

作者：

Hochepied, JF

Ilioukhina, O

Berger, MH

机构：

[1] Ecole Natl Super Mines, Ctr Energet, Lab Syst Collidaux Proc Ind, F-75006 Paris, France

[2] Ecole Natl Super Mines, Ctr Mat, Evry, France

来源：

MATERIALS LETTERS | 2003年 / 57卷 / 19期

关键词：

boehmite; bayerite; precipitation; mixing; porosity; ceramics;

D O I：

10.1016/S0167-577X(02)01381-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three different mixing procedures of aluminium nitrate with soda were compared keeping identical aging conditions (T=60degreesC, pH=9, 120-min aging): injection of nitrate aluminium solution into soda, injection of soda into nitrate aluminium solution and double jet. Each procedure led to a specific compound: microporous boehmite, bayerite and fibrillar boehmite, respectively. For single jet procedures, reactions were therefore driven locally in the mixing zone where the most influent parameter was the nature of injected solution. This allows obtainment of bayerite or boehmite at unexpected pH. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：2817 / 2822

页数：6

共 21 条

[11] Effect of anions during hydrothermal preparation of boehmites [J].