CAJ | 학술논문

多孔粉体在介孔和微孔范围内的表征需要专业的实验仪器,这限定了对该类材料全面的表征只能在大型实验室中进行. 本文提出了一种改进的BET测量装置,其核心部件是高精度的压差传感器,这种设备让小型实验室也可以测量多孔粉体的内扩散系数和孔分布. 使用数值解析方法和蒙特卡罗模拟方法分析了测量扩散系数实验的数据.
다공분체재개공화미공범위내적표정수요전업적실험의기,저한정료대해류재료전면적표정지능재대형실험실중진행. 본문제출료일충개진적BET측량장치,기핵심부건시고정도적압차전감기,저충설비양소형실험실야가이측량다공분체적내확산계수화공분포. 사용수치해석방법화몽특잡라모의방법분석료측량확산계수실험적수거.
The characterization of the micropore range in porous powders requires sophisticated apparatuses, which limits their thorough characterization to large laboratories. We describe a modification of a BET adsorption apparatus, in which the key instrument is a high precision differential pressure sensor, which even small laboratories can afford, that can be used to measure the internal diffusivity and micropore size distribution (mPSD) of microporous powders. The apparatus is based on the conventional gas uptake rate measurement and adsorption manometry for measuring diffusivity and mPSD, respectively. Numerical simulations of the measurement and uptake rate were used to analyze the apparatus.