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New Ultramarine Generations from Egyptian Raw Materials

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Author Affiliations

  • 1Chemistry Department, Faculty of Science, Tanta University, Tanta, EGYPT
  • 2Ceramic Department, National Research center,Cairo, EGYPT.

Res.J.chem.sci., Volume 1, Issue (2), Pages 88-98, May,18 (2011)

Abstract

New ultramarine generation have been prepared by the solid state mixing and firing technique from Egyptian Raw Materials for the first time. The raw materials used includes kaoline, Na2CO3 , charcoal and sulphur precursors. The action of NH4Cl on the obtained ultramarine has been studied using X-ray, UV absorption and DC-electrical conductivity, whereas a midet esr appears. Results of TGA, DTA and electrical conductivity have been undertaken and interpreted for the first time.

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