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GEOREF RECORD

Hydrothermal synthesis of Zn-smectites

Shoji Higashi, Kazuhiko Miki and Sridhar Komarneni
Hydrothermal synthesis of Zn-smectites
Clays and Clay Minerals (June 2002) 50 (3): 299-305

Abstract

Two varieties of Zn-smectite were synthesized hydrothermally: sauconite, with an ideal composition of Na (sub 0.4) Zn (sub 3) (Si (sub 3.6) Al (sub 0.4) )O (sub 10) (OH) (sub 2) . nH (sub 2) O; and a Zn equivalent of hectorite, with an ideal composition of Na (sub 0.4) (Li (sub 0.4) Zn (sub 2.6) )Si (sub 4) O (sub 10) (OH) (sub 2) . nH (sub 2) O (referred to here as Zn-hectorite). For comparison, hydrothermal synthesis of the related trioctahedral smectites of hectorite, Na (sub 0.4) (Li (sub 0.4) Mg (sub 2.6) )Si (sub 4) O (sub 10) (OH) (sub 2) . nH (sub 2) O and hectorites containing Cu, Co or Ni in the octahedral sheets instead of Mg were also attempted. The results showed that sauconite, Zn-hectorite and hectorite could be synthesized in the temperature range 100-125 degrees C but hectorites containing Cu, Co or Ni in the octahedral sheet, under the same conditions or even at a temperature of 150 degrees C, could not.


ISSN: 0009-8604
EISSN: 1552-8367
Coden: CLCMAB
Serial Title: Clays and Clay Minerals
Serial Volume: 50
Serial Issue: 3
Title: Hydrothermal synthesis of Zn-smectites
Affiliation: Kochi University, Department of Natural Environmental Science, Kochi, Japan
Pages: 299-305
Published: 200206
Text Language: English
Publisher: Clay Minerals Society, Clarkson, NY, United States
References: 18
Accession Number: 2002-064828
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 5 tables
Secondary Affiliation: Pennsylvania State University, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200220
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