Maceral controls on porosity characteristics of lithotypes of Pennsylvanian high volatile bituminous coal: Example from the Illinois Basin

Teng, Juan; Mastalerz, María; Hampton, LaBraun

doi:10.1016/j.coal.2017.02.001

Cited by 72 publications

(44 citation statements)

References 35 publications

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“…At the end of sorption part of the experiment the carbon dioxide capacity of sample V was 22.4% higher and the carbon dioxide capacity of sample D was 21.7% lower than the value obtained for basic coal sample B. The sorption capacity of samples under investigation are similar to the values obtained for comparable coal samples of clarain and durain by Teng et al (2017) and sample TN researched by Zhao et al (2016).…”

Section: Resultssupporting

confidence: 74%

“…The same situation can be observed for an aromatic carbon region (1550-1650 cm −1 ). Absorption in this band have a prominent aromatic carbon a peak at 1610 cm −1 (Ibarra et al 1996) and is an indication of conjugated C=C structures which occur in significantly higher numbers in the vitrinite rich sample V in comparison with sample D. Bands in the aliphatic bending region (1350-1450 cm −1 ) (Teng et al 2017) are less prominent for the samples with less vitrinite content. In case of sample D the appearance of an absorption peak at 1030 cm −1 is very likely to represent mineral matter (Zhang et al 2015).…”

Section: Resultsmentioning

confidence: 93%

“…The presence of hydroxyl groups on the pore surface has a strong influence on the adsorption of polar sorbates. Sample V spectra is characterized by minor prominent aliphatic band in the aliphatic stretching region (2800-3000 cm −1 ) (Teng et al 2017) with other spectra having barely visible absorption peaks. The same situation can be observed for an aromatic carbon region (1550-1650 cm −1 ).…”

Section: Resultsmentioning

confidence: 99%

“…Coal lithotypes differ in their maceral composition and typically, there is an increase of inertinite and a decrease in vitrinite content from vitrain to fusain (Mastalerz et al 2010;Teng et al 2017). This results in differing physical and chemical properties of lithotypes.…”

Section: Introductionmentioning

confidence: 99%

“…What is important in the aspect of adsorption, there are significant differences in porosity characteristics, pore volume distributions and adsorption characteristics. Teng et al (2017) investigated porosity characteristics in three Pennsylvanian high volatile bituminous coals hand-separated into four lithotypes each: vitrain, clarain, durain, and fusain. Micropore characteristics of coal under investigation were analyzed by lowpressure CO 2 adsorption showing the D-R micropore surface area and D-A micropore volume decrease from vitrain, through clarain, and durain to fusain.…”

Section: Introductionmentioning

confidence: 99%

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Sorption of carbon dioxide on the lithotypes of low rank coal

et al. 2019

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The aims of this work were (1) the determination of the efficiency of isolating by hand two lithotypes concentrates, vitrain and durain, from original coal sample of low rank bituminous coal, (2) the evaluation of the relation between macro-and microscopically distinguishable components of samples under investigation and their physicochemical properties and (3) the assessment of the effect of maceral composition of low rank coal on carbon dioxide sorption capacity and desorption process. To address the first issue a petrographic analysis was performed for separated components and the original raw sample. A significantly higher vitrinite content in vitrain concentrate and much lower in durain concentrate in regard to basic coal confirmed that the separation process was satisfactory. The second aspect comprised an investigation into selected physical and chemical properties of original coal and two lithotypes concentrates including helium density, methanol density, FTIR spectra, the amount of oxygen functional groups and swelling properties using pyridine as solvent. The results show that in the case of material under study the coal rank does not preponderate the effect of maceral composition. This third issue was addressed by performing adequate sorption experiments carried out at 298 K at low pressure on basic coal sample and two lithotypes concentrates. The tendency of adsorption capacity of CO 2 to depend on maceral composition was confirmed as it increases with the content of vitrinite. The Dubinin-Radushkevich equation shows a very good agreement with all the experimental data obtained for both lithotypes concentrates and basic coal under investigation.

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Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sorption of carbon dioxide on the lithotypes of low rank coal

et al. 2019

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Bibliography

2020

Coal Geology

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Influence of coal properties on the CO₂ adsorption capacity of coal gasification residues

Sripada

Khan

Ramasamy

et al. 2018

Energy Science & Engineering

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Post-underground coal gasification (UCG) sites hold attractive prospects for geological storage of carbon dioxide. For the successful commercial implementation of UCG with carbon capture and storage (CCS), site-selection is crucial, and a careful techno-economic feasibility analysis is essential to systematically assess the site related parameters aside from evaluating the environmental risk. This study is related to one of the important aspects of site selection-the coal type. Specifically, this work investigates the influence of coal properties and gasification conditions on the adsorption capacities of CO 2 on gasified coal chars. For this purpose, four coals of diverse ranks varying from lignite to bituminous were selected and subjected to CO 2 gasification at atmospheric pressure for 10 min at 800, 900, and 1000°C under a low heating rate of 5°C/min. Subsequently, the gasified chars, as well as the raw coals, were tested for their adsorption capacity in a purpose built volumetric adsorption apparatus at 45.5°C and pressures up to 90 bar. Also, complementary coal and char analysis were carried out for determining the surface area, pore size distribution, and surface morphology. The CO 2 storage capacity was observed to be a strong function of the coal properties and gasification conditions. Among the samples examined, the highest adsorption capacity was observed for chars of the sub-bituminous coals. The CO 2 adsorption capacity at 80 bar and 45.5°C on the sub-bituminous char samples was 2.08, 2.43, and 1.95 mmole/g that were prepared at 800, 900, and 1000°C, respectively. The experimental adsorption isotherms were fitted to the Dubinin-Radushkevic (DR) and the Dubinin-Astakhov (DA) models. 322

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Maceral controls on porosity characteristics of lithotypes of Pennsylvanian high volatile bituminous coal: Example from the Illinois Basin

Cited by 72 publications

References 35 publications

Sorption of carbon dioxide on the lithotypes of low rank coal

Sorption of carbon dioxide on the lithotypes of low rank coal

Bibliography

Influence of coal properties on the CO₂ adsorption capacity of coal gasification residues

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Maceral controls on porosity characteristics of lithotypes of Pennsylvanian high volatile bituminous coal: Example from the Illinois Basin

Cited by 72 publications

References 35 publications

Sorption of carbon dioxide on the lithotypes of low rank coal

Sorption of carbon dioxide on the lithotypes of low rank coal

Bibliography

Influence of coal properties on the CO2 adsorption capacity of coal gasification residues

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Influence of coal properties on the CO₂ adsorption capacity of coal gasification residues