Yttrium-doped Alumina (Y-Al2O3) aerogels

Yttrium-doped Alumina (Y-Al2O3) aerogels/Y-doped Al2O3 aerogel/Yttrium-doped Alumina aerogels/Y-doped Alumina aerogel from ruixi. The prepared Y-doped Al2O3 aerogel has a high initial specific surface area (483 m2/g) and a high specific surface area retention at high temperatures (still 80 m2/g after treatment at 1200°C). The Y element in Al2O3 The uniform distribution in the airgel inhibits the diffusion and rearrangement of Al3+ at high temperatures. After heat treatment at 1200~1300°C, the Y element changes from uniform distribution to non-uniform distribution, and compounds of Y and Al are generated on the surface of Al2O3 particles, which can further Reduce the neck contact between particles and inhibit sintering and phase change. After heat treatment at 1300°C, due to the low specific surface area of the compounds of Y and Al, the total specific surface area of the airgel decreased significantly.Yttrium-doped Alumina (Y-Al2O3) aerogels are known for their thermal stability, low dielectric constant, and potential applications in fields such as catalysis, insulation, and aerospace due to their unique combination of properties.

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