Detecting pore size distribution of activated carbon by low-field nuclear magnetic resonance

被引：3
|
作者：
Zhao, Zhihong [1 ]
Wang, Bin [1 ]
Tan, Rui [1 ]
Liu, Wenjing [1 ]
Zhang, Minghui [1 ]
机构：
[1] Inner Mongolia Agr Univ, Coll Mat Sci & Art Design, Hohhot 010018, Peoples R China
来源：
MAGNETIC RESONANCE IN CHEMISTRY | 2022年 / 60卷 / 04期
基金：
中国国家自然科学基金;
关键词：
activated carbon; NMR; pore size; ELECTRON-MICROSCOPY; POROUS-MEDIA; NMR; RELAXATION; DIFFUSION; BEHAVIOR; WATER;
D O I：
10.1002/mrc.5247
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study, the transverse relaxation time (T-2) of activated carbon (AC) in different relative environment humidity was detected firstly by low-field nuclear magnetic resonance (LFNMR). The pore size (diameter) of AC distributions was calculated by the relationship between T-2 and surface relaxation rate (rho), where rho was obtained by the detection of nine porous materials with known pore size. The results showed that the pore size distributions of AC calculated by rho < 0.19 nm/ms were in good agreement with that obtained by nitrogen adsorption method and proved that LFNMR as a new detection method was feasible for characterizing AC pore size distribution.
引用
收藏
页码：427 / 433
页数：7
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