Coal and Its Liquefaction Products Studied by NMR and ESR Spectroscopy

Chinese Journal of Magnetic Resonance ›› 2010, Vol. 27 ›› Issue (2): 206-213.

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Coal and Its Liquefaction Products Studied by NMR and ESR Spectroscopy

SONG Rui¹, PAN Tie-Yang¹, SHI Xin-Mei¹, ZHOU Li-Fang¹, XU Yi², ZHANG De-Xiang², GAO Jin-Sheng²

1. Analysis and Research Center, East China of Science and Technology, Shanghai 200237, China;
2. College of Resource and Environment Engineering, East China university of Science and Technology, Shanghai 200237, China

Received:2009-09-17 Revised:2009-10-22 Online:2010-06-05 Published:2010-06-05
Supported by:
国家重点基础研究发展计划(“973”计划)资助项目（2004CB217601）, 国家自然科学基金资助项目（20476029）.

Abstract

Abstract:

Studying the coal and its liquefaction products provides important information about how to control coal liquefaction. In this study, six kinds of coal were analyzed by element analysis, ¹³C CP/MAS/TOSS NMR spectroscopy and ESR spectroscopy. The results showed that the aromaticity of the coal increased with the carbon content. Higher aromaticity of the coal was associated with higher concentrations of aromatic carbons and free radicals, but with lower g factor. The liquefaction products of coal were analyzed by ESR spectroscopy, and the results were used to estimate structural information of the coal and liquefaction mechanisms.

Key words: ¹³C CP/MAS/TOSS NMR, ESR, coal, aromaticity, liquefaction

CLC Number:

O482.53

SONG Rui, PAN Tie-Yang, SHI Xin-Mei, ZHOU Li-Fang, XU Yi, ZHANG De-Xiang, GAO Jin-Sheng. Coal and Its Liquefaction Products Studied by NMR and ESR Spectroscopy[J]. Chinese Journal of Magnetic Resonance, 2010, 27(2): 206-213.

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Coal and Its Liquefaction Products Studied by NMR and ESR Spectroscopy

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