【摘要】 介绍了近年来多孔材料中分子扩散研究的发展,重点介绍了测定方法的新进展。指出多孔材料中分子扩散的研究主要集中于小分子如丁烷、异丁烷、戊烷、环戊烷、环已烷、苯、甲苯、对二甲苯、乙苯、邻二甲苯等。认为在众多方法中,重量法、程序升温脱附法、色谱法及膜池法等以其方便有效,是将来发展的重要测试方法。更多还原

【Abstract】 This paper reviewed the research on the molecular diffusion in porous materials in recent years,in particular the progress on the test techniques.The molecules investigated mainly focus on butane,iso-butane,pentane,cyclopentane,cyclohexane,benzene,methylbenzene,p-xylene,ethylbenzen,o-xylene and etc.The gravimetric analysis,temperature program desorption,chromatography and diaphragm-cell are important test techniques which should be further developed due to their convenience and high efficiency in operation.更多还原