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A route for synthesis of microcrystalline gibbsite in Na+ free medium

A route for synthesis of microcrystalline gibbsite in Na+ free medium JOURNAL OF MATERIALS SCIENCE LETTERS 19, 2000, 1525 – 1527 H. SOUZA SANTOS, P. K. KIYOHARA Electron Microscopy Laboratory, Physics Institute, University of Sao ˜ Paulo, Sao ˜ Paulo, Brazil E-mail: helenas@fge.if.usp.br P. SOUZA SANTOS Department of Chemical Engineering, Polytechnical School, University of Sao ˜ Paulo, Sao ˜ Paulo, Brazil The aluminum trihydroxide gibbsite is the most tried in order to obtain the reaction of the aluminum important alumina chemical as precursor in advanced with water. These conditions were found, but surpris- ceramics, catalyst and adsorbent and aluminum indus- ingly no bayerite is formed, as it could be expected tries. Gibbsite crystallizes in the monoclinic system, by similarity with amalgamated aluminum; different but often as microscopic tabular crystals with pseu- hydroxides and their mixtures could be prepared ac- dohexagonal outlines [1, 2]. The aluminum hydroxide cording to the temperature of reaction. In the narrow which crystallizes in water without any dissolved chem- temperature range of 50 to 60 C, pure microcrystals of C C ical compound is bayerite; adding Na or K , gibbsite gibbsite could be prepared. Compared with pure alu- is formed [3]. Wefers [4] reviewed the processes for minum turnings, sheets, foils and other powders, the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Letters Springer Journals

A route for synthesis of microcrystalline gibbsite in Na+ free medium

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References (4)

Publisher
Springer Journals
Copyright
Copyright © 2000 by Kluwer Academic Publishers
Subject
Materials Science; Characterization and Evaluation of Materials; Industrial Chemistry/Chemical Engineering; Polymer Sciences; Classical Mechanics
ISSN
0261-8028
eISSN
1573-4811
DOI
10.1023/A:1006708602621
Publisher site
See Article on Publisher Site

Abstract

JOURNAL OF MATERIALS SCIENCE LETTERS 19, 2000, 1525 – 1527 H. SOUZA SANTOS, P. K. KIYOHARA Electron Microscopy Laboratory, Physics Institute, University of Sao ˜ Paulo, Sao ˜ Paulo, Brazil E-mail: helenas@fge.if.usp.br P. SOUZA SANTOS Department of Chemical Engineering, Polytechnical School, University of Sao ˜ Paulo, Sao ˜ Paulo, Brazil The aluminum trihydroxide gibbsite is the most tried in order to obtain the reaction of the aluminum important alumina chemical as precursor in advanced with water. These conditions were found, but surpris- ceramics, catalyst and adsorbent and aluminum indus- ingly no bayerite is formed, as it could be expected tries. Gibbsite crystallizes in the monoclinic system, by similarity with amalgamated aluminum; different but often as microscopic tabular crystals with pseu- hydroxides and their mixtures could be prepared ac- dohexagonal outlines [1, 2]. The aluminum hydroxide cording to the temperature of reaction. In the narrow which crystallizes in water without any dissolved chem- temperature range of 50 to 60 C, pure microcrystals of C C ical compound is bayerite; adding Na or K , gibbsite gibbsite could be prepared. Compared with pure alu- is formed [3]. Wefers [4] reviewed the processes for minum turnings, sheets, foils and other powders, the

Journal

Journal of Materials Science LettersSpringer Journals

Published: Oct 6, 2004

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