Paramagnetic centers in two-and three-component coal blends carbonized at 1000 Β°C were studied by X-band (9.3 GHz) electron paramagnetic resonance (EPR) technique. The blends were prepared from three different Polish coals with carbon contents [wt.%]: 88.66, 86.21, and 82.67, respectively. The aim o
Application of Electron Emission Spectroscopy to Characterize Sulfur Bonds in Coal
β Scribed by Schultz, Harry D.; Proctor, W. G.
- Book ID
- 115358651
- Publisher
- Society for Applied Spectroscopy
- Year
- 1973
- Tongue
- English
- Weight
- 372 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0003-7028
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The complex lineshape of the X-band EPR spectra of natural coal heated at 300-650 Β°C was numerically analysed. The experimental spectra were approximated by superpositions of one Gauss and three Lorentz lines. Linewidths ο±H pp , g-factors and abundances of the components of the total spectrum were e
Fourier-transform infrared spectroscopy offers considerable advantages over conventional dispersive methods for the characterization of highly absorbing materials such as coal. This technique has been applied to the determination of the functional groups present in three solvent-refined-coal samples