Preparation of Magnesia Insulation Materials by Calcination of Walnut Shell Powder by Silica Sol Impregnation

<div>(a) Structural diagram of the inner and outer surfaces of the silica sol. (b) Schematic diagram of the surface principle of the silica sol-impregnated walnut shell powder.</div>

Advances in Materials Science and Engineering

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Figure 4

Figure 4: Preparation of Magnesia Insulation Materials by Calcination of Walnut Shell Powder by Silica Sol Impregnation 