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- Title
Variation of functional groups in coal oxidation process at low temperature based on TG and infrared spectra.
- Authors
Hongqing Zhu; Jing Shen; Mingran Chang
- Abstract
Structure of coal is quite complex. In order to study the variation of the functional groups in coal at low temperature, Fourier transform infrared spectroscopy and sub-peaks technology were used in this paper to do scanning experiments on three different metamorphic grade coal samples which were lignite, bituminous coal and anthracite coal, respectively. The peak area values of different functional groups in three kinds of those coal samples were obtained at 50 - 200?. The coal samples were isothermal in thermogravimetric analyzer. It indicates that for one same coal sample, the peak area values of different functional groups have different trends with temperature varying, and for one same functional group in different coal samples, the peak area values also have different trends. The trends of different functional groups with temperature in different coal samples and temperature turning points were obtained. And this provides the basis of microscopic aspects for macroscopically determining the feature point temperatures of coal oxidation and combustion.
- Subjects
COAL research; FOURIER transform infrared spectroscopy; LOW temperature research
- Publication
Metallurgical & Mining Industry, 2015, Issue 6, p629
- ISSN
2076-0507
- Publication type
Article