Surface and pore properties of ANL and PETC coals
Surface areas, pore volumes, pore size distribution, and solid densities were measured for three ANL coals (Pittsburgh No. 8, Wyodak, and Beulah Zap Lignite), two PETC coals (Lower Wilcox, and Dietz) and a Utah Scofield coal and for chars derived from these coals. Surface areas were measured using nitrogen and carbon dioxide adsorptions; pore volumes were determined using nitrogen adsorption, mercury porosimetry, and NMR spin-lattice relaxation measurements of samples saturated with water. Solid densities were obtained using helium displacement. The results indicate that chars have larger surface areas and pores relative to coals; large fractions of the internal surfaces of coals are not penetrated by nitrogen molecules but are penetrated by carbon dioxide suggesting that the pores are mostly smaller than 1 nm.
- Research Organization:
- Brigham Young Univ., Provo, UT (USA)
- OSTI ID:
- 5975095
- Report Number(s):
- CONF-8809161-
- Journal Information:
- Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Vol. 33:3; Conference: Symposium on research with Argonne premium coal samples, Los Angeles, CA, USA, 25-30 Sep 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BITUMINOUS COAL
PHYSICAL PROPERTIES
LIGNITE
SUBBITUMINOUS COAL
ADSORPTION
CARBON DIOXIDE
CHARS
DATA
DENSITY
DISTRIBUTION
HELIUM
MICROSTRUCTURE
NITROGEN
NUCLEAR MAGNETIC RESONANCE
POROSIMETERS
POROSITY
SAMPLE PREPARATION
SIZE
SURFACE AREA
BLACK COAL
BROWN COAL
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
CRYSTAL STRUCTURE
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
INFORMATION
MAGNETIC RESONANCE
MATERIALS
MEASURING INSTRUMENTS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS PRODUCTS
RARE GASES
RESONANCE
SORPTION
SURFACE PROPERTIES
010600* - Coal
Lignite
& Peat- Properties & Composition