Data base for the analysis of compositional characteristics of coal seams and macerals. Quarterly technical progress report, November 1981-January 1982

Technical Report · Sun Aug 01 04:00:00 EDT 1982

OSTI ID:6931159

Davis, A

The basic objectives of this program are, first, to understand the systematic relationships between the properties of coals, and, second, to determine the nature of the lateral and vertical variability in the properties of a single seam. A total of 225 coal samples and 106 printouts of coal analyses were provided on request to the coal research community. The relationship between reflectance and coal rank was evaluated using 885 coals from the Penn State Coal Data Base. Reflectance distributions showed that coals of medium volatile bituminous rank and higher could be discriminated using mean maximum reflectance. A set of 21 vitrinite concentrates have been characterized by FTIR. Hydroxyl groups have been quantitatively determined by combining acetylation with FTIR procedures. Conversion factors were determined for various bands. Values were calculated by equating total hydrogen from elemental analysis to the fraction of hydrogen present as hydroxyl, aromatic C-H and aliphatic C-H groups. The variation in values of the conversion factors for aromatic and aliphatic C-H bands were determined as a function of assumed values for the conversion factor of the OH bands. Large variations in the latter do not greatly affect calculated values of aliphatic and aromatic C-H groups. The distribution of hydrogen between OH, aromatic C-H and aliphatic C-H groups was also determined. Densities of some vitrinitic macerals were measured by the displacement of mercury, helium, methanol and water at ambient temperature and the pore volumes accessible to these fluids are reported. Micropore volumes determined from CO/sub 2/ adsorption are significantly smaller. These macerals show considerable swelling in methanol.

• Research Organization: Pennsylvania State Univ., University Park (USA). Coal Research Section
• DOE Contract Number: AC22-80PC30013
• OSTI ID: 6931159
• Report Number(s): DOE/PC/30013-8; ON: DE83003260
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ACETYLATION
ACYLATION
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COAL
COAL DEPOSITS
COAL RANK
COAL SEAMS
COMBUSTION PROPERTIES
CORRELATIONS
DATA
DATA BASE MANAGEMENT
DENSITY
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FOURIER TRANSFORMATION
FUELS
GEOLOGIC DEPOSITS
HYDROXY COMPOUNDS
INFORMATION
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
MACERALS
MANAGEMENT
MATERIALS
MEASURING METHODS
MINERAL RESOURCES
NORTH AMERICA
NUMERICAL DATA
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
REFLECTIVITY
RESOURCES
SPECTRA
SURFACE PROPERTIES
TRACE AMOUNTS
TRANSFORMATIONS
USA
VARIATIONS