Preparation of Chain-Like and Layer Rock-Like MgO Powders by Molten Salt Synthesis

Abstract:

Particle-like MgO powders were first prepared using LiCl as reaction medium, MgCl₂·6H₂O and CaCO₃ as reaction materials. Soaked them by PEG and PEG-EDTA solution, different Mg(OH)₂ precursors were formed, which morphologies were fiber-like via PEG and tetrahedron-like via PEG-EDTA . Re-heated at 600 , Mg(OH)₂ was decomposed to MgO. Decomposed by fiber-like Mg(OH)₂, MgO powders were chain-like, with 0.1-0.3 µm in diameter and 20-100 in length-to-width ration. On the other side, decomposed by tetrahedron-like Mg(OH)₂, MgO powders were layer rock-like with vertex defected, which brim was up to 1.5 µm in length.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 1218-1221
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.1218
• Online since: May 2011
• Authors: Hao Chen, De Si Sun, Qing Hua Hu, De Zi Zhou
• Keywords: Chain-Like, Layer Rock-Like, MgO Powder, Molten Salt Synthesis

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