2016
DOI: 10.1016/j.fuel.2016.05.110
|View full text |Cite
|
Sign up to set email alerts
|

Fractal characteristics of coal samples utilizing image analysis and gas adsorption

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
5

Citation Types

0
61
0

Year Published

2018
2018
2024
2024

Publication Types

Select...
7
2

Relationship

0
9

Authors

Journals

citations
Cited by 203 publications
(61 citation statements)
references
References 68 publications
(91 reference statements)
0
61
0
Order By: Relevance
“…In recent decades, various constantly updated methods have been applied to evaluate the coal PSD characteristics, including direct observational methods and indirectly inferred methods. Direct observation methods are, for example, scanning electron microscopy (SEM) [5,6], X-ray computerized tomography (X-CT) [7,8] and atomic force microscope (AFM) [9,10], which can be used 2 of 18 to characterize the two-or three-dimensional distribution of coal PSDs. Indirectly inferred methods include mercury intrusion porosimetry (MIP) [11,12], gas adsorption (N 2 and CO 2 ) [13][14][15][16] and nuclear magnetic resonance (NMR) [17][18][19].…”
Section: Introductionmentioning
confidence: 99%
“…In recent decades, various constantly updated methods have been applied to evaluate the coal PSD characteristics, including direct observational methods and indirectly inferred methods. Direct observation methods are, for example, scanning electron microscopy (SEM) [5,6], X-ray computerized tomography (X-CT) [7,8] and atomic force microscope (AFM) [9,10], which can be used 2 of 18 to characterize the two-or three-dimensional distribution of coal PSDs. Indirectly inferred methods include mercury intrusion porosimetry (MIP) [11,12], gas adsorption (N 2 and CO 2 ) [13][14][15][16] and nuclear magnetic resonance (NMR) [17][18][19].…”
Section: Introductionmentioning
confidence: 99%
“…Pore and fracture systems of coals have been comprehensively studied by constantly updated methods in recent years, including experimental techniques such as photoelectric observation, gas adsorption, and fluid intrusion, and reconstruction of three-dimensional structures (Chalmers et al, 2012;Clarkson et al, 2013;Li et al, 2017;Liu and Nie, 2016;Yao et al, 2010). The pores of coal can be classified into those <2 nm (micropores), 2-50 nm (mesopores), and >50 nm (macropores) in size according to the International Union of Pure and Applied Chemistry (IUPAC).…”
Section: Introductionmentioning
confidence: 99%
“…Among testing methods, the low-temperature nitrogen test (LPN 2 GA) has become an effective method to characterize adsorption pore structure (Francisco et al, 1996;Liu and Nie, 2016;Mahamud and Novo, 2008;Nie et al, 2015). However, this method has difficulty characterizing the structure of adsorption pores <2 nm in size accurately given the larger molecular kinetic diameter (0.36 nm) and instrument precision constraints ( Li et al, 2012a;.…”
Section: Introductionmentioning
confidence: 99%
“…(Mahamud and Novo 2008) used both porosity, obtained via mercury injection, and fractal analysis to assess the texture of coal: The fractal dimensions and fractal profiles were found to be sensitive to oxidation treatment; this information is useful to follow the changes in coal samples. (Liu and Nie 2016) employed a lowpressure nitrogen gas adsorption technique along with SEM to study methane adsorption in coal and demonstrated that the fractal dimensions of the pores comprehensively reflect the difference in the physical properties of the coal. (Shi et al 2018) investigated micrometer-sized fractures via micro-CT scanning and fractal analysis, with results showing high interconnectivity in the micro-fracture networks of low-grade coal and greater complexity in the micro-fracture structure of higher-grade coal.…”
Section: Introductionmentioning
confidence: 99%