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Sreedevi Upadhyayula
Indian Institute of Technology Delhi
Corresponding Author
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The present work aims at studying five Indian coals and their solvent extracted clean coal products using Py-GCMS analysis and correlating these characterizations with results from theoretical a principal component analysis. The pyrolysis products of the original coals and the super clean coals were classified as mono-, di and tri- aromatics while other prominent products that were obtained included cycloalkanes, n-alkanes and alkenes ranging from C10-C29. The Py-GCMS results for the samples were studied using Principal Component Analysis. Inferences on relative composition of constituent compounds and functional groups and structural insights based on scores and loading plots of the PCA analysis were consistent with the experimental observations. ATR-FTIR studies confirmed the reduced concentration of ash in the super clean coals and the presence of aromatics. The Py-GCMS data and the ATR-FTIR spectra led to the conclusion that the super clean coals behaved similarly for both coking and non-coking coals with high aromatic concentrations as compared to the raw coal. Neyveli lignite super clean coal was found to show some structural similarity with the original coals, whereas, the other super clean coal showed structural similarity among them but not with their original coals indicative of the selective action of the e,N solvent system on the polycondensed aromatic structures in coal.
Keywords
Coal, Super clean coals, Pyrolysis, PCA, ATR-FTIR, Py-GCMS
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CURRENT STATUS: Published
View the published article at International Journal of Coal Science & Technology.
Version 1
Posted 17 Dec, 2020
No community comments so far
Editorial decision: Minor Revision
On 05 Mar, 2021
Reviewer #3 agreed
On 30 Dec, 2020
Review #1 received
Received 23 Dec, 2020
Review #2 received
Received 18 Dec, 2020
Reviewer #2 agreed
On 14 Dec, 2020
Reviewers invited
Invitations sent on 09 Dec, 2020
Reviewer #1 agreed
On 09 Dec, 2020
Editor assigned
On 07 Dec, 2020
Submission checks complete
On 07 Dec, 2020
Editor invited
On 07 Dec, 2020
First submitted
On 05 Dec, 2020
Metrics
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Subject Areas
Energy Engineering
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A new preprint design is coming!
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See the published version of this preprint at International Journal of Coal Science & Technology.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research
Sreedevi Upadhyayula
Indian Institute of Technology Delhi
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at International Journal of Coal Science & Technology.
Version 1
Posted 17 Dec, 2020
No community comments so far
Editorial decision: Minor Revision
On 05 Mar, 2021
Reviewer #3 agreed
On 30 Dec, 2020
Review #1 received
Received 23 Dec, 2020
Review #2 received
Received 18 Dec, 2020
Reviewer #2 agreed
On 14 Dec, 2020
Reviewers invited
Invitations sent on 09 Dec, 2020
Reviewer #1 agreed
On 09 Dec, 2020
Editor assigned
On 07 Dec, 2020
Submission checks complete
On 07 Dec, 2020
Editor invited
On 07 Dec, 2020
First submitted
On 05 Dec, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Energy Engineering
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at International Journal of Coal Science & Technology.
The present work aims at studying five Indian coals and their solvent extracted clean coal products using Py-GCMS analysis and correlating these characterizations with results from theoretical a principal component analysis. The pyrolysis products of the original coals and the super clean coals were classified as mono-, di and tri- aromatics while other prominent products that were obtained included cycloalkanes, n-alkanes and alkenes ranging from C10-C29. The Py-GCMS results for the samples were studied using Principal Component Analysis. Inferences on relative composition of constituent compounds and functional groups and structural insights based on scores and loading plots of the PCA analysis were consistent with the experimental observations. ATR-FTIR studies confirmed the reduced concentration of ash in the super clean coals and the presence of aromatics. The Py-GCMS data and the ATR-FTIR spectra led to the conclusion that the super clean coals behaved similarly for both coking and non-coking coals with high aromatic concentrations as compared to the raw coal. Neyveli lignite super clean coal was found to show some structural similarity with the original coals, whereas, the other super clean coal showed structural similarity among them but not with their original coals indicative of the selective action of the e,N solvent system on the polycondensed aromatic structures in coal.
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