Journal ArticleDOI
Characterization of vitrinite concentrates. 1. Fourier Transform infrared studies
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In this article, a set of 21 vitrinite concentrates have been characterized by FTIR and the variation in values of the extinction coefficients for aromatic and aliphatic CH bands are determined as a function of assumed values for the extinction coefficient of the OH bands.About:
This article is published in Fuel.The article was published on 1982-08-01. It has received 100 citations till now.read more
Citations
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Journal ArticleDOI
Coal pyrolysis: Experiments, kinetic rates and mechanisms
Journal ArticleDOI
Direct characterization of kerogen by x-ray and solid-state **13c nuclear magnetic resonance methods
Simon R. Kelemen,Mobae Afeworki,Martin L. Gorbaty,Michael Sansone,P. J. Kwiatek,Clifford C. Walters,Howard Freund,M. Siskin,A. E. Bence,David J. Curry,Mark S. Solum,Ronald J. Pugmire,M. Vandenbroucke,M. Leblond,F. Behar +14 more
TL;DR: A combination of solid-state 13C NMR, X-ray photoelectron spectroscopy (XPS) and sulfur Xray absorption near edge structure (S-XANES) techniques are used to characterize organic oxygen, nitrogen, and sulfur species and carbon chemical/structural features in kerogens as discussed by the authors.
Journal ArticleDOI
FTIR spectroscopy and reflectance of modern charcoals and fungal decayed woods: implications for studies of inertinite in coals
Yingting Guo,R.M. Bustin +1 more
TL;DR: In this article, the chemical and physical characteristics of laboratory produced charcoals, natural charcoal, fungal decayed wood and inertinite from a variety of Western Canadian coals have been investigated using FTIR and standard petrologic techniques.
Journal ArticleDOI
Evaluation of Structural Characteristics of Huadian Oil Shale Kerogen Using Direct Techniques (Solid-State 13C NMR, XPS, FT-IR, and XRD)
TL;DR: In this paper, a sample of Huadian oil shale was studied using a combination of solid-state 13C NMR, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR), and Xray diffraction (XRD) techniques to evaluate its structural characteristics.
Journal ArticleDOI
FTIR absorption indices for thermal maturity in comparison with vitrinite reflectance R0 in type-II kerogens from Devonian black shales
TL;DR: In this paper, FTIR spectra were evaluated as indices for thermal maturity and a good correlation was observed between the aromatic/aliphatic absorption ratio and vitrinite reflectance R 0.
References
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Journal ArticleDOI
Concerning the Application of FT-IR to the Study of Coal: A Critical Assessment of Band Assignments and the Application of Spectral Analysis Programs
Paul C. Painter,Randy W. Snyder,Michael Starsinic,Michael M. Coleman,Deborah W. Kuehn,Alan Davis +5 more
TL;DR: In this article, the problems associated with the application of FT-IR to the characterization of coal structure are critically discussed and the controversies concerning band assignments are considered and it is concluded that the strong 1600 cm−1 band can be assigned to an aromatic ring stretching mode that in most coals is intensity enhanced by the presence of phenolic groups.
Journal ArticleDOI
Characterization of organic material in coal by proton-decoupled 13C nuclear magnetic resonance with magic-angle spinning
TL;DR: In this article, the authors used high-power proton decoupling, cross polarization and magic-angle spinning to obtain the carbon distribution between aromatic and non-aromatic structures in coal samples.
Journal ArticleDOI
Fourier Transform Infrared study of mineral matter in coal. A novel method for quantitative mineralogical analysis
TL;DR: In this paper, the low-temperature ash of coal is analyzed by means of absorbance spectral subtraction of individual components, stored in digital form on computer memory, multiplied by appropriate weighting factors and subtracted from the spectrum of the low temperature ash, so that the characteristic bands of the mineral are removed.
Journal ArticleDOI
Fourier transform infrared study of the variation in the oxidation of a coking coal
TL;DR: In this article, Fourier transform infrared spectroscopy was applied to a quantitative analysis of the low-temperature ash from ten consecutive channel samples along an exploration adit through a high-volatile coking coal seam.