Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Hydrothermal formation of a kaolinite-like product from noncrystalline aluminosilicate gels

C. R. De Kimpe, H. Kodama and R. Rivard
Hydrothermal formation of a kaolinite-like product from noncrystalline aluminosilicate gels
Clays and Clay Minerals (December 1981) 29 (6): 446-450

Abstract

Noncrystalline aluminosilicate gels with Al (sub 2) O (sub 3) /(Al (sub 2) O (sub 3) + SiO (sub 2) ) weight ratios from 0.3 to 0.5 were reacted in 0.1 N KOH at temperatures varying from 125 degrees to 175 degrees C. The pH of the solutions dropped sharply with increasing gel:solution ratios, indicating that the coordination number of Al in the products changed from IV to VI. The degree of hydrolysis appeared to be higher with KOH than with NaOH. X-ray powder diffraction and infrared spectroscopy showed that disordered kaolinite was the only crystalline product formed. Thermal data and surface area measurements indicated that the kaolinite was formed by a condensation process.


ISSN: 0009-8604
Coden: CLCMAB
Serial Title: Clays and Clay Minerals
Serial Volume: 29
Serial Issue: 6
Title: Hydrothermal formation of a kaolinite-like product from noncrystalline aluminosilicate gels
Affiliation: Agric. Can., Ste-Foy, QC, Canada
Pages: 446-450
Published: 198112
Text Language: English
Summary Language: Russian
Summary Language: German
Summary Language: French
Publisher: Clay Minerals Society, Clarkson, NY, United States
References: 9
Accession Number: 1982-033634
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Agric. Can.; Res. Stn. Ste-Foy, Contrib. No. 181; CBRI, Contrib. No. 1230
Illustration Description: illus. incl. 1 table
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Update Code: 1982
Close Modal

or Create an Account

Close Modal
Close Modal