Preparation and Characterization of Activated Sericite Modified by Fluorosilicate

Abstract:

The structure of sericite is stable, and it is hard to prepare polymer layered silicate nanocomposites (PLSN). Therefore, structural modification was employed to activate sericite to reduce the layer charger. The thermal treated sericite (S₁) was prepared by thermal modification at 800 for one hour. Then, the resulting product was modified with sodium fluorosilicate, whose effect was characterized by X-ray diffraction (XRD) analysis. The dissolving-out amount of Al³⁺ of salt-treated product (S₂) reached circa 2.55 mg/g at the optimal processing conditions. CEC of S₂ was increased to 10.52 meq/100g compared with that of original sericite (4.94 meq/100g). The results of XRD analysis indicated that mica-type phase persisted after salt modification with sodium fluosilicate.

• Periodical: Advanced Materials Research (Volume 427)
• Pages: 70-76
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.427.70
• Online since: January 2012
• Authors: Xia Xu, Hao Ding, Yue Bo Wang, Yu Liang, Wei Jiang
• Keywords: CEC, Fluorosilicate, Layer Charge, Sericite

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