摘要
在多相催化反应过程中，化学反应与多孔催化剂的表面密切相关。由于表面的不规则性，以往基于欧氏几何的数学处理，显得过于理想化和简单化。近年来发展起来的分形几何为更好地表征催化剂及载体的表面拓朴特征提供了新的可能。在这方面，Avnir、Pfeifer和Farm等f‘－引做了一系列的工作，认为自然界中许多物质属干表面分形。
The surface pore structure of porous γ-A12O3 was investigated with SEM and adsorption methods. The SEM photos with different magnifications showed that the surface of γ - A12O3 particle was of self-similarity qualitatively. The monolayer values of different ad-sorbates were determined with the frontal gas chromatography. The surface pore structure was analyzed on the basis of fractal geometry and a fractal dimension of 2. 78 was calculated from the experimental data.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1993年第2期246-249,共4页
CIESC Journal
基金
国家自然科学基金资助项目
