Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (4) Citing Articles via Google Scholar Google Scholar Articles by FRANCO, F. Articles by RUIZ CRUZ, M. D. Search for Related Content GeoRef GeoRef Citation

Factors influencing the intercalation degree (‘reactivity’) of kaolin minerals with potassium acetate, formamide, dimethylsulphoxide and hydrazine

Departamento de Quiímica Inorgánica, Cristalografiía y Mineralogía, Facultad de Ciencias, Universidad de Málaga, Spain

^* E-mail: mdruiz{at}uma.es

(Received 15 May 2003; revised 15 December 2003)

Factors influencing the degree of intercalation (‘reactivity’) of kaolinite group minerals have been investigated using six kaolin minerals, with variable crystallinity and particle size. Tests were performed to measure the degree of intercalation with potassium acetate, formamide, dimethylsulphoxide and hydrazine.

These experiments indicate that intercalation degree depends on a number of factors, including particle size, degree of ordering, type of guest molecules, method of intercalation, and presence and types of impurities. A new method for determination of the degree of intercalation is proposed, which is not dependent on the intensity of complex reflections. The results indicate that formamide is the most sensitive reagent to distinguish differently ordered kaolin minerals whereas hydrazine appears as the most appropriate reagent to differentiate kaolin minerals from other 7 Å phases.

KEYWORDS: kaolinite, dickite, intercalation complex, potassium acetate, formamide, dimethylsulphoxide, hydrazine, X-ray diffraction

This article has been cited by other articles:

				E. JOUSSEIN, S. PETIT, J. CHURCHMAN, B. THENG, D. RIGHI, and B. DELVAUX Halloysite clay minerals -- a review Clay Minerals, December 1, 2005; 40(4): 383 - 426. [Abstract] [Full Text] [PDF]