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设计和性能比较聚合物衍生陶两和气凝

Oyku Icin¹, Tugce Semerci¹, Gian Domenico Soraru²

¹Department of Materials Science and Engineering, İzmir Institute of Technology, 35430 İzmir, Turkey.

|September 18, 2023

概括

这项研究表明,环境压力干燥产生SiOC气凝,其特性与昂贵的超临界干燥相似,使其适用于油吸附和水净化.

科学领域:

材料科学材料科学材料科学
陶工程陶工程

背景情况:

聚合物衍生陶具有可调节的特性.
气凝具有独特的多孔结构,表面积很大.

研究的目的:

为了合成和表征氧化碳 (SiOC) 气凝.
为了比较环境压力干燥 (ambigels) 与二氧化碳超临界干燥.
评估这些气凝在油吸附,水净化和隔热方面的潜力.

主要方法:

从氧树脂中合成SiOC气凝.
环境压力干燥 (ambigels) 和二氧化碳超临界干燥.
微观结构特征的表征 (密度,多孔性,毛孔大小,表面积).
测量热导电性的方法.

主要成果:

这两种干燥方法都产生了具有可比微观结构性质的SiOC气凝.
氧化气凝在油吸附和水净化方面表现出有效性.
超临界干燥的SiOC气凝具有较低的导热率 (0.046 W·m−1·K−1在RT,0.073 W·m−1·K−1在500°C).

结论:

环境压力干燥是SiOC气凝超临界干燥的可行,经济高效的替代方案.
氧化气凝是环境修复和隔热应用的有希望的材料.

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