Synthesis and Characterization of Leucite Using a Diatomite Precursor

Area of Science:

• Materials Science
• Ceramic Engineering
• Geochemistry

Background:

• Leucite is crucial for dental porcelains and ceramic restoration systems.
• Developing cost-effective synthesis methods for leucite is industrially important.

Purpose of the Study:

• To present a novel hydrothermal synthesis of leucite from naturally derived amorphous silica.
• To optimize the synthesis process for improved temporal yield and product quality.
• To characterize the synthesized leucite and explore its geological implications.

Main Methods:

• Preparation of silicate and aluminate solutions from diatomite and aluminum hydroxide.
• Hydrothermal treatment at 150°C followed by calcination at 1000°C.
• Characterization using Powder X-Ray Diffraction, ICP-OES, FTIR, Thermal Analysis, and He-pycnometry.

Main Results:

• Synthesis run 3 achieved leucite crystallization in 15 hours, demonstrating superior temporal yield.
• Characterization confirmed satisfactory chemical and physical properties of the synthesized leucite.
• Quantitative phase analysis estimated the amorphous phase content.

Conclusions:

• The diatomite-based hydrothermal synthesis offers a cost-effective and scalable route to high-quality leucite.
• The process provides insights into natural leucite formation in basaltic geological systems.
• This method is attractive for industrial scale-up in ceramic restoration applications.