Study and measurement of the thermal and structural properties of silicate materials (SiO2)

4^th International Conference and Expo on Ceramics and Composite Materials

May 14-15, 2018 | Rome, Italy

Abdelhamid Oufakir, Lahcen Khouchaf and Mohamed. Elaatmani

Cadi Ayyad University Marrakech-Morocco Lille Universite, France

Posters & Accepted Abstracts: Res. Rev. J Mat. Sci

DOI: 10.4172/2321-6212-C1-015

Abstract

The compounds based on SiO2, are of interest in several fields: as strengthening additives in the potter’s clay materials, insulator in electronic compounds and in glass industry, concrete, Polymers… Reactivity of SiO2 depends on the chemical process that occurs between amorphous or poorly crystallized SiO2 and the matrix, in turn depends on the surface state of SiO2 particles. The silanol groups (SiOH) are the main surface reactive sites and their properties (nature, concentration, distribution, accessibility, etc.) will determine the chemical activity of the silica. The aim of this work is to study the dependence between structure properties and reactivity of silica for different SiO2 compounds. The results show the effect of reaction time and concentration of basic solution (KOH) on creation of the silanol groups on silica surface. A methodology is proposed to quantify different silanol groups on silica surface. oufakir.emi@gmail.com

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