POTASSIUM BORATE SYNTHESIS FROM SODIUM BORATES: OPTIMIZATION OF REACTION CONDITIONS

Abstract

Potassium borates are the important compounds due to their specific properties and can be used as in metal refining industry, in construction compounds, as fiberglass material, as in lubricants and in non-linear optical materials. In this study, a specific potassium pentaborate (KB5O8·4H2O) compound of santite mineral, with a powder diffraction number of 01-0721688 was synthesized through a hydrothermal route with reaction efficiencies between 90-96%. The main potassium source was potassium chloride (KCl) and the boron sources were tincalconite (Na2B4O7·5H2O), borax (Na2B4O7·10H2O), boric acid (H3BO) and boron oxide (B2O3). Reaction temperatures were determined between 60 and 90oC and reaction times between 15 and 120 minutes. Synthesized minerals were characterized by Xray diffraction (XRD), Fourier transform infrared (FT-IR) and Raman spectroscopies and surface morphologies were determined by scanning electron microscopy (SEM). *Corresponding Author: [e-mail]

Keywords

• Potassium borates, Hydrothermal synthesis, Characterization, XRD

SODYUM BORATLARDAN POTASYUM BORAT SENTEZİ: REAKSİYON KOŞULLARININ OPTİMİZASYONU

Abstract

Potasyum boratlar; spesifik özelliklerinden dolayı metal rafine etme endüstrisinde, yapı bileşiklerinde, fiberglas malzeme olarak, yağlayıcılarda olduğu gibi doğrusal olmayan optik malzemelerde kullanılabilen önemli bileşiklerdir. Bu çalışmada, 01-072-1688 toz difraksiyon kart numarasına sahip spesifik bir potasyum pentaborat (KB5O8·4H2O) olan santit minerali hidrotermal metotla %90-96 verimle sentezlenmiştir. Potasyum kaynağı olarak potasyum klorür (KCl) ve bor kaynağı olarak tinkalkonit (Na2B4O7·5H2O), boraks (Na2B4O7·10H2O), borik asit (H3BO3) ve bor oksit (B2O3) kullanılmıştır. Reaksiyon sıcaklıkları 60 ve 90ºC, reaksiyon süreleri 15 – 120 dakika aralığında belirlenmiştir. Difraktometresi (XRD), Fourier transform infrared (FT-IR) ve Raman spektroskopileri ve yüzey morfolojilerinin incelenmesi içinde taramalı elektron mikroskobu (SEM) kullanılmıştır

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