FT-IR measurements of aliphatic and aromatic C-H groups in coal

Conference · Thu Sep 01 04:00:00 EDT 1983 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:6519705

Riesser, B; Davis, A; Painter, P C; Starsinic, M

The experimental difficulties involved in the study of coal structure are both notorious and well-documented. Nevertheless, recent improvements in spectroscopic instrumentation have allowed the determination of what are thought to be reasonably accurate parameters describing an average coal structure. For example, Fourier transform infrared spectroscopy (FT-IR) has been applied to the determination of aromatic and aliphatic hydrogen. Unlike measurements of aromaticity by NMR, however, infrared methods rely on calibrating the intensities of specific bands to the concentration of the appropriate functional groups, using model compounds or other procedures. The authors have recently found that the values obtained depend heavily on the choice of bands and the methodology employed. In addition, the calibration coefficients vary considerably with rank. The authors will discuss the various approaches employed and the errors involved in each. Results indicate that the best that can be achieved is the definition of a band of values of aromatic and aliphatic hydrogen.

• Research Organization: College of Earth and Mineral Sciences, The Pennsylvania State University, University Park, Pennsylvania
• OSTI ID: 6519705
• Report Number(s): CONF-830814-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 28:5
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AROMATICS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
ENERGY SOURCES
ERRORS
FOSSIL FUELS
FOURIER TRANSFORMATION
FUELS
HYDROCARBONS
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
MATERIALS
MEASURING METHODS
ORGANIC COMPOUNDS
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TRANSFORMATIONS