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Energy Sources, Part A: Recovery, Utilization, and Environmental Effects Volume 31, 2009 - Issue 18: ISAF XVII
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Original Articles

Effect of Hydrogen Bond on Coal Extraction by In-situ Vacuum FTIR

J. Li Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan, P.R. China
,
J. Feng Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan, P.R. China
,
W.-Y. Li Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan, P.R. China
,
H.-Z. Chang Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan, P.R. China
&
K.-C. Xie Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan, P.R. China
Pages 1660-1665 | Published online: 22 Jul 2009
 
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Abstract

Coal chemical formation environment might result in different properties of hydrogen bonds in coal structure. The thermo stability, amount and types of hydrogen bond in six typical Chinese coal macerals were investigated by in situ vacuum Fourier transform infrared spectroscopy (FTIR). It was found that three types of hydrogen bond were involved in coal structure, which were OH-N, OH self associated, and OH tetrapolymer hydrogen bond. There was no correlation between the amount of three types of hydrogen bonds and extraction yield. The thermo stability of hydrogen bond in inertinite was stronger than that of vitrinite, especially the thermo stability of hydrogen bond in Pingshuo inertinite.

Acknowledgments

The authors greatly appreciate the financial support from NNSF of China (No. 20476068, 90410018, 20846002), Shanxi Natural Science Funding (No. 20051017), the Special Funds for Major State Basic Research Projects 973 (2005CB221207), NCET-05-0267, NCET-06-0261, and IRT0517 programs in MOE and Shanxi Returned Scholarship (2006-29).

Notes

a By difference.

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