Microanalysis of barkinite from Chinese coals of high volatile bituminous rank

Maria Mastalerz; James C. Hower; Yanyan Chen

doi:10.1016/j.coal.2015.03.004

Microanalysis of barkinite from Chinese coals of high volatile bituminous rank

Maria Mastalerz, James C. Hower, Yanyan Chen

Earth and Environmental Sciences

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Permian high volatile bituminous barkinite-rich coal from China has been evaluated petrographically and analyzed by electron microprobe and micro-FTIR techniques. The analyzed samples varied in vitrinite reflectance from 0.65% to 0.73%, and the corresponding reflectance of barkinite ranged from 0.19% to 0.23%. Compared to the associated vitrinite, barkinite had a higher carbon and lower oxygen content in all samples. It had stronger aliphatic CH_x absorbance at 2800-3000 and 1450-1460 cm^-1 and less intense both aromatic C=C ring stretching vibration at ~1600 cm^-1 and aromatic CH_x out-of-plane deformation at 700-900 cm^-1. Micro-FTIR revealed large variations in the aliphatic group intensities within barkinite, suggesting its varying oil generation potential. Air oxidation of barkinite over a 6-month period resulted in rapid consumption of aliphatic groups and the formation of oxygenated functional groups.

Original language	English
Pages (from-to)	103-108
Number of pages	6
Journal	International Journal of Coal Geology
Volume	141-142
DOIs	https://doi.org/10.1016/j.coal.2015.03.004
State	Published - Mar 1 2015

Bibliographical note

Funding Information:
Financial support from the China Scholarship Council (CSC) for Y. C. is gratefully acknowledged. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0006978 (formerly DE-FG02-11ER16246 ). We thank J.A. Curiale, one Anonymous Reviewer and the Editor for valuable comments.

Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

Barkinite
Coal
FTIR
Vitrinite

ASJC Scopus subject areas

Fuel Technology
Geology
Economic Geology
Stratigraphy

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10.1016/j.coal.2015.03.004

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title = "Microanalysis of barkinite from Chinese coals of high volatile bituminous rank",

abstract = "Permian high volatile bituminous barkinite-rich coal from China has been evaluated petrographically and analyzed by electron microprobe and micro-FTIR techniques. The analyzed samples varied in vitrinite reflectance from 0.65% to 0.73%, and the corresponding reflectance of barkinite ranged from 0.19% to 0.23%. Compared to the associated vitrinite, barkinite had a higher carbon and lower oxygen content in all samples. It had stronger aliphatic CHx absorbance at 2800-3000 and 1450-1460 cm-1 and less intense both aromatic C=C ring stretching vibration at ~1600 cm-1 and aromatic CHx out-of-plane deformation at 700-900 cm-1. Micro-FTIR revealed large variations in the aliphatic group intensities within barkinite, suggesting its varying oil generation potential. Air oxidation of barkinite over a 6-month period resulted in rapid consumption of aliphatic groups and the formation of oxygenated functional groups.",

keywords = "Barkinite, Coal, FTIR, Vitrinite",

author = "Maria Mastalerz and Hower, {James C.} and Yanyan Chen",

note = "Funding Information: Financial support from the China Scholarship Council (CSC) for Y. C. is gratefully acknowledged. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0006978 (formerly DE-FG02-11ER16246 ). We thank J.A. Curiale, one Anonymous Reviewer and the Editor for valuable comments. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

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doi = "10.1016/j.coal.2015.03.004",

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AU - Mastalerz, Maria

AU - Hower, James C.

AU - Chen, Yanyan

N1 - Funding Information: Financial support from the China Scholarship Council (CSC) for Y. C. is gratefully acknowledged. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0006978 (formerly DE-FG02-11ER16246 ). We thank J.A. Curiale, one Anonymous Reviewer and the Editor for valuable comments. Publisher Copyright: © 2015 Elsevier B.V.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Permian high volatile bituminous barkinite-rich coal from China has been evaluated petrographically and analyzed by electron microprobe and micro-FTIR techniques. The analyzed samples varied in vitrinite reflectance from 0.65% to 0.73%, and the corresponding reflectance of barkinite ranged from 0.19% to 0.23%. Compared to the associated vitrinite, barkinite had a higher carbon and lower oxygen content in all samples. It had stronger aliphatic CHx absorbance at 2800-3000 and 1450-1460 cm-1 and less intense both aromatic C=C ring stretching vibration at ~1600 cm-1 and aromatic CHx out-of-plane deformation at 700-900 cm-1. Micro-FTIR revealed large variations in the aliphatic group intensities within barkinite, suggesting its varying oil generation potential. Air oxidation of barkinite over a 6-month period resulted in rapid consumption of aliphatic groups and the formation of oxygenated functional groups.

AB - Permian high volatile bituminous barkinite-rich coal from China has been evaluated petrographically and analyzed by electron microprobe and micro-FTIR techniques. The analyzed samples varied in vitrinite reflectance from 0.65% to 0.73%, and the corresponding reflectance of barkinite ranged from 0.19% to 0.23%. Compared to the associated vitrinite, barkinite had a higher carbon and lower oxygen content in all samples. It had stronger aliphatic CHx absorbance at 2800-3000 and 1450-1460 cm-1 and less intense both aromatic C=C ring stretching vibration at ~1600 cm-1 and aromatic CHx out-of-plane deformation at 700-900 cm-1. Micro-FTIR revealed large variations in the aliphatic group intensities within barkinite, suggesting its varying oil generation potential. Air oxidation of barkinite over a 6-month period resulted in rapid consumption of aliphatic groups and the formation of oxygenated functional groups.

KW - Barkinite

KW - Coal

KW - FTIR

KW - Vitrinite

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JO - International Journal of Coal Geology

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ER -

Microanalysis of barkinite from Chinese coals of high volatile bituminous rank

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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