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<p><?tk 4?>This study investigates the synthesis and characterization of forsterite (Mg<sub>2</sub>SiO<sub>4</sub>) via solid-state reactions between magnesium oxide (MgO) and three different silica polymorphs: quartz, cristobalite, and amorphous silica. The influence of silica structure on reaction kinetics, formation temperature, and final product purity was systematically analyzed. The synthesized powders were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermal analysis. The results show that the type and morphology of silica play a crucial role in determining the efficiency of forsterite formation. Amorphous silica demonstrated the highest chemical reactivity, enabling the formation of highly pure forsterite at significantly lower temperatures (~ 900&#xa0;°C), making it the most energy-efficient option. Cristobalite offered a balance between reactivity and thermal stability, while quartz required higher temperatures and longer reaction times. This comparative study highlights the importance of silica phase selection in optimizing forsterite synthesis, offering insights into low-temperature processing routes for advanced ceramic materials with reduced energy demands.</p>

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Effect of silica polymorph on forsterite formation and crystallinity

  • 期刊论文

  • 发表日期：

    2026年4月11日

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  • Imene Amiour,
  • Ferhat Bouzerara,
  • Foudil Sahnoune,
  • Saleh M. Alluqmani,
  • Mustafa M. Demir,
  • Seyra Toprak

摘要

This study investigates the synthesis and characterization of forsterite (Mg2SiO4) via solid-state reactions between magnesium oxide (MgO) and three different silica polymorphs: quartz, cristobalite, and amorphous silica. The influence of silica structure on reaction kinetics, formation temperature, and final product purity was systematically analyzed. The synthesized powders were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermal analysis. The results show that the type and morphology of silica play a crucial role in determining the efficiency of forsterite formation. Amorphous silica demonstrated the highest chemical reactivity, enabling the formation of highly pure forsterite at significantly lower temperatures (~ 900 °C), making it the most energy-efficient option. Cristobalite offered a balance between reactivity and thermal stability, while quartz required higher temperatures and longer reaction times. This comparative study highlights the importance of silica phase selection in optimizing forsterite synthesis, offering insights into low-temperature processing routes for advanced ceramic materials with reduced energy demands.