Pore size distribution calculation from 1H NMR signal and N2 adsorption–desorption techniques

2012 ◽  
Vol 407 (18) ◽  
pp. 3797-3801 ◽  
Author(s):  
Jamal Hassan
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
1H Nmr ◽  
N2 Adsorption ◽  
Distribution Calculation ◽  
Adsorption Desorption

Pore size distribution in mesoporous materials as studied by 1H NMR

2001 ◽  
Vol 3 (15) ◽  
pp. 3203-3207 ◽  
Author(s):  
D. W. Aksnes ◽  
K. Førland ◽  
L. Kimtys
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
1H Nmr ◽  
Mesoporous Materials

The role of beaded activated carbon’s pore size distribution on heel formation during cyclic adsorption/desorption of organic vapors

2016 ◽  
Vol 315 ◽  
pp. 42-51 ◽  
Author(s):  
Masoud Jahandar Lashaki ◽  
John D. Atkinson ◽  
Zaher Hashisho ◽  
John H. Phillips ◽  
James E. Anderson ◽  
...  
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Organic Vapors ◽  
Cyclic Adsorption ◽  
Adsorption Desorption

Synthesis of small Fe2O3 nanocubes and their enhanced water vapour adsorption–desorption properties

RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 84587-84591 ◽  
Author(s):  
Feng Cao ◽  
Duanyang Li ◽  
Ruiping Deng ◽  
Lijian Huang ◽  
Daocheng Pan ◽  
...  
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Water Vapour ◽  
Critical Radius ◽  
Vapour Adsorption ◽  
Water Vapour Adsorption ◽  
Adsorption Desorption

Uniform ordered Fe2O3 nanocubes showed an excellent humidity-controlling ability, due to their appropriate pore size distribution near the condensation critical radius.

Micro- and Mesopores Occurring in Transitional Shales: An Examination Based on Pore Radius and Origin

2021 ◽  
Vol 21 (1) ◽  
pp. 296-309
Author(s):  
Wenlong Han ◽  
Yanbin Wang ◽  
Yong Li ◽  
Du Liu ◽  
Xiang Wu
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Vitrinite Reflectance ◽  
Ordos Basin ◽  
Lower Permian ◽  
Sem Images ◽  
Average Value ◽  
High Maturity ◽  
Adsorption Desorption

The microscopic pores in shales can be characterized based on different features, including pore morphology, pore size distribution and pore origin. In this work, shale samples from the Lower Permian Shanxi Formation and Upper Carboniferous Taiyuan Formation in the Linxing Block of the Ordos Basin were examined via experiments including X-ray diffraction (XRD), total organic carbon (TOC) analysis, field emission scanning electron microscopy (FE-SEM), automatic acquisition of large-image technology (MAPS), and low-temperature gas (CO2 and N2) adsorption/desorption experiments. The results show that clay minerals (average value of 53.9 wt.%) and quartz (average value of 39.0 wt.%) dominate the sample composition, with some K-feldspar, plagioclase, siderite, etc. The TOC values are between 1.15% and 8.46%, and all the shales are of middle-high maturity (the vitrinite reflectance (Ro) ranges from 1.23% to 1.75%). Based on FE-SEM images, the observed pore types include interparticle (interP) pores, intraparticle (intraP) pores, and organicmatter (OM) pores, and the pores and fractures at different scales are examined by MAPS. The distributions of micro- and mesopores and the proportions of the different pore sizes were determined from the N2 and CO2 adsorption results. The pore size distribution results suggest that N2 mainly penetratesmesopores (2–50 nm), while CO2 mainly penetrates large micropores (0.7–2 nm). Micropores are the largest contributors to the total pores. The mesopores were further classified as small, medium and large mesopores, and the proportion of mesopores decreased with increasing pore size.

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