Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
Clay Minerals Signup for GSW Email News
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Clay Minerals; March 2001; v. 36; no. 1; p. 125-138
© 2001 Mineralogical Society of Great Britain and Ireland
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by VICENTE, M. A.
Right arrow Articles by GIL, A.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Research Paper

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

M. A. VICENTE1,*, M. A. BAÑARES-MUÑOZ1, R. TORANZO1, L. M. GANDÍA2 and A. GIL2

1 Departamento de Química Inorgánica, Universidad de Salamanca, Plaza de la Merced s/n, 37008 Salamanca, Spain, and 2 Departamento de Química Aplicada, Universidad Pública de Navarra, Campus de Arrosadía, 31006 Pamplona, Spain

* E-mail: mavicente{at}gugu.usal.es

(Received 27 December 1999; revised 12 July 2000)

The pillaring of smectites (two saponites and a montmorillonite) with various Ti precursors was 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 TiCl4 and Ti(EtO)4 strongly affected the structure of the clays, not by acid attack on the octahedral sheet, but mainly by disaggregation of particles. Ti(isop)4 was found to be less aggressive for the clays, while Ti(etacet)2(isop)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°C, showing a high specific surface area.

KEYWORDS: Ti-pillared clays, pillared clays, intercalated clays, montmorillonite, saponite




This article has been cited by other articles:


Home page
 Clays and Clay MineralsHome page
A. Romero, F. Dorado, I. Asencio, P. B. Garcia, and J. L. Valverde
Ti-PILLARED CLAYS: SYNTHESIS AND GENERAL CHARACTERIZATION
Clays and Clay Minerals, December 1, 2006; 54(6): 737 - 747.
[Abstract] [Full Text] [PDF]

Home page
 Clays and Clay MineralsHome page
J. L. Valverde, J. L. Valverde, P. Sanchez, F. Dorado, I. Asencio, and A. Romero
PREPARATION AND CHARACTERIZATION OF Ti-PILLARED CLAYS USING Ti ALKOXIDES. INFLUENCE OF THE SYNTHESIS PARAMETERS
Clays and Clay Minerals, February 1, 2003; 51(1): 41 - 51.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Mineralogical Society of Great Britain and Ireland