Preparation of Delaminated Nano-Kaolinite by Intercalation of Chemical Assistants

Abstract:

A process for preparing of the delaminated kaolinite was developed with intercalation of hydrazine, urea or potassium acetate followed by removing the chemical assistants. Delaminated kaolinite was characterized by XRD, solid-state NMR, thermal analyses, particle-size distribution analyses, etc. The particle size was reduced to ca. 440 nm in diameter and ca.15 nm in thickness in contrast to about 7 μm and 800 nm for untreated precursor respectively. The dehydroxylation temperature of kaolinite was shifted from 514°C to 490°C by the delamination. Additionally, a greater mass lost was also observed for the delaminated particles by dehydroxylation.

• Periodical: Advanced Materials Research (Volumes 11-12)
• Pages: 441-444
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.11-12.441
• Online since: February 2006
• Authors: Mei Na Niu, Can Xiong Guo
• Keywords: Chemical Asistant, Delamination, Intercalation, Nanokaolinite

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