Preparation of Nano-Kaolinite and Mechanism

Abstract:

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With potassium acetate as an intercalation agent, kaolinite-potassium acetate(KAc) intercalation complexes was prepared. Afterwards, nano-kaolinite was successfully made through exfoliated intercalation complexes using power ultrasonic. The intermediate and final products were characterized by X-ray diffraction(XRD), infrared spectroscopy(IR), laser particle size analyzer, and scanning electron microscope (SEM). The results show that intercalation of KAc into kaolinite resulted in a crystal space expansion, from a basal spacing of 7.14Ǻ to 14.20 Ǻ, and the intercalation rate was about 80%. KAc intercalation causes the weakening of interlayer stability. It was shown that the particles of nano-kaolinite is very thin lamellar in shape, whose average thickness, average particle size, are 50 nm and 450 nm respectively.

Info:

Periodical:

Advanced Materials Research (Volumes 204-210)

Edited by:

Helen Zhang, Gang Shen and David Jin

Pages:

1217-1220

DOI:

10.4028/www.scientific.net/AMR.204-210.1217

Citation:

S. L. Ding et al., "Preparation of Nano-Kaolinite and Mechanism", Advanced Materials Research, Vols. 204-210, pp. 1217-1220, 2011

Online since:

February 2011

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Price:

$35.00

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