A rapid coal characterisation analysis by low-resolution NMR spectroscopy and partial least-squares regression

✍ Scribed by J.R Harmer; T.G Callcott; M Maeder; B.E Smith

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 160 KB
• Volume: 80
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/s0016-2361(01)00006-0

✦ Synopsis

H-NMR spectroscopy is a potentially useful technique for the characterisation of coal. A novel technique was applied to distinguish, characterise and determine quantitatively ®ve different classes of proton containing components from air-dried Australian bituminous coals. The ®ve different classes of protons are described by 14 ®tted NMR parameters, which are the signal amplitudes, spin±lattice relaxation times and spin±spin relaxation times. To establish the mathematical relationship between the 14 ®tted NMR parameters and the properties of a large set of bituminous Australia coals, a partial least-squares (PLS) regression algorithm was used. Predictions were accurate for many coal properties, particularly those related to the organic matter of the coal. The method is therefore, a rapid (25 min) method for coal quality monitoring with potential for commercial application.