Simple procedure for an estimation of the coal rank using micro-Raman spectroscopy

被引:128
作者
Hinrichs, Ruth [1 ]
Brown, Matthew T. [2 ]
Vasconcellos, Marcos A. Z. [3 ]
Abrashev, Miroslav V. [3 ,4 ]
Kalkreuth, Wolfgang [1 ,2 ]
机构
[1] Univ Fed Rio Grande do Sul, Inst Geociencias, BR-91501970 Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Programa Posgrado Geociencias, BR-91501970 Porto Alegre, RS, Brazil
[3] Univ Fed Rio Grande do Sul, Inst Fis UFRGS, BR-91501970 Porto Alegre, RS, Brazil
[4] Univ Sofia, Fac Phys, Sofia 1164, Bulgaria
关键词
Coal rank; Vitrinite reflectance; Raman spectroscopy; Band fitting; Graphite G-band; Graphite D-band; X-RAY-DIFFRACTION; SIZE L-A; CHAR STRUCTURE; CARBONACEOUS MATERIAL; LASER RAMAN; PARAMETERS; GRAPHITE; SPECTRA; REFLECTANCE; PYROLYSIS;
D O I
10.1016/j.coal.2014.10.013
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
080707 [能源环境工程]; 082001 [油气井工程];
摘要
An alternative way for an estimation of coal rank, based on micro-Raman spectroscopy, is presented. Raman spectra and mean random reflectance percentage (%R-r,) were measured from 170 vitrinite grains, with %R-r in the range from 0.18 to 4.67, representing 35 coals within a broad range of rank (peat to anthracite). The spectral region between 850 cm(-1) and 1840 cm(-1) of the Raman spectra was fitted with two Lorentzian functions and a linear inclined baseline. It was found that the width of the graphitic band (G near 1580 cm(-1)) and both width and position of the disordered band (D near 1340 cm(-1)) monotonously decreased with the increase of %R-r of the grains. Due to the high reproducibility of these parameters, when calculated from Raman spectra obtained on different spots of the same grain, as well as the clearly pronounced Raman parameters-reflectance dependences, they can be used for an estimate of the coal rank. The correlation between Raman parameters and random reflectance of the vitrinite grains was expressed with empirical formulae. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:52 / 58
页数:7
相关论文
共 54 条
[1]
REMARKS ON THE STRUCTURE OF CARBON MATERIALS ON THE BASIS OF RAMAN-SPECTRA [J].
ANGONI, K .
CARBON, 1993, 31 (04) :537-547
[2]
[Anonymous], 2009, ISO 7404-5
[3]
Raman validity for crystallite size La determination on reticulated vitreous carbon with different graphitization index [J].
Baldan, M. R. ;
Almeida, E. C. ;
Azevedo, A. F. ;
Goncalves, E. S. ;
Rezende, M. C. ;
Ferreira, N. G. .
APPLIED SURFACE SCIENCE, 2007, 254 (02) :600-603
[4]
XANES, Raman and XRD study of anthracene-based cokes and saccharose-based chars submitted to high-temperature pyrolysis [J].
Bernard, S. ;
Beyssac, O. ;
Benzerara, K. ;
Findling, N. ;
Tzvetkov, G. ;
Brown, G. E., Jr. .
CARBON, 2010, 48 (09) :2506-2516
[5]
On the characterization of disordered and heterogeneous carbonaceous materials by Raman spectroscopy [J].
Beyssac, O ;
Goffé, B ;
Petitet, JP ;
Froigneux, E ;
Moreau, M ;
Rouzaud, JN .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2003, 59 (10) :2267-2276
[6]
Raman spectra of carbonaceous material in metasediments:: a new geothermometer [J].
Beyssac, O ;
Goffé, B ;
Chopin, C ;
Rouzaud, JN .
JOURNAL OF METAMORPHIC GEOLOGY, 2002, 20 (09) :859-871
[7]
Determination of the petrologic type of CV3 chondrites by Raman spectroscopy of included organic matter [J].
Bonal, L ;
Quirico, E ;
Bourot-Denise, M ;
Montagnac, G .
GEOCHIMICA ET COSMOCHIMICA ACTA, 2006, 70 (07) :1849-1863
[8]
Bustin R., 1989, GEOLOGICAL ASS CANAD, V3
[9]
MECHANISMS OF GRAPHITE FORMATION FROM KEROGEN - EXPERIMENTAL-EVIDENCE [J].
BUSTIN, RM ;
ROSS, JV ;
ROUZAUD, JN .
INTERNATIONAL JOURNAL OF COAL GEOLOGY, 1995, 28 (01) :1-36
[10]
Investigation into the evolution of char structure using Raman spectroscopy in conjunction with coal petrography; Part 1 [J].
Chabalala, V. P. ;
Wagner, N. ;
Potgieter-Vermaak, S. .
FUEL PROCESSING TECHNOLOGY, 2011, 92 (04) :750-756