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GEOREF RECORD

Influence of the Ti precursor on the properties of Ti-pillared smectites

M. A. Vicente, M. A. Banares-Munoz, R. Toranzo, L. M. Gandia and A. Gil
Influence of the Ti precursor on the properties of Ti-pillared smectites
Clay Minerals (March 2001) 36 (1): 125-138

Abstract

The pillaring of smectites (two saponites and a montmorillonite) with various Ti precursors were studied. The minerals were intercalated with "classical" Ti precursors, such as titanium tetrachloride and titanium tetraethoxide, and also with new precursors, such as solutions of titanium tetraisopropoxide in acetic acid, or titanium (bis (ethylacetoacetato) diisopropoxide) in acetone. A complete characterization of the intercalated solids was carried out and a comparison of the properties of the solids as a function of the precursors used in the intercalation established. The influence of the severe conditions in which the intercalation with Ti oligomers is usually carried out (low pH and/or high temperature) on the properties of the intercalated solids was analysed. Intercalation with TiCl (sub 4) and Ti(EtO) (sub 4) strongly affected the structure of the clays, not by acid attack of the octahedral sheet, but mainly by disaggregation of particles. Ti(isop) (sub 4) was found to be less aggressive for the clays, while Ti(etacet) (sub 2) (isop) (sub 2) did not form pillared solids but organo-clays, and therefore was of no use as a pillaring agent. The solids were thermally stable up to 300 degrees C, showing a high specific surface data.


ISSN: 0009-8558
EISSN: 1471-8030
Coden: CLMIAF
Serial Title: Clay Minerals
Serial Volume: 36
Serial Issue: 1
Title: Influence of the Ti precursor on the properties of Ti-pillared smectites
Affiliation: Universidad de Salamanca, Departamento de Quimica Inorganica, Salamanca, Spain
Pages: 125-138
Published: 200103
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 57
Accession Number: 2002-037630
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Secondary Affiliation: Universidad Publica de Navarra, ESP, Spain
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200213
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