PREPARATION OF AQUEOUS SOLS CONTAINING WELL-SHAPED BOEHMITE CRYSTALS

被引:0
|
作者
SANTOS, PD
NEVES, RD
SANTOS, HD
机构
[1] UNIV SAO PAULO,INST FIS,DEPT FIS EXPTL,MICROSCOPIA ELECTR LAB,CAIXA POSTAL 20516,BR-01498 SAO PAULO,BRAZIL
[2] UNIV SAO PAULO,ESCOLA POLITECN,DEPT CHEM ENGN,BR-01498 SAO PAULO,BRAZIL
关键词
BOEHMITE; PSEUDOBOEHMITE; ALUMINUM MONO-HYDROXIDE; ALPHA-ALUMINA;
D O I
暂无
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The paper describes the preparation of aqueous sols of crystalline boehmite, containing about 70 grams of AlOOH per liter from three different starting materials; gels of Al(OH)2Ac are obtained and are hydrolyzed by thermal aging into sols of fibrillar pseudoboehmite. The pseudoboehmite fibrils are hydrothermally recrystallized at 200-degrees-C producing well-shaped hexagonal laths of boehmite, also as stable sols.
引用
收藏
页码:197 / 200
页数:4
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