Photoacoustic microscopy of coal macerals

Journal Article · Thu Mar 01 00:00:00 EST 1984 · Miner. Matters; (United States)

OSTI ID:6214738

Johnson, K W; Telschow, K L; Biswas, A; Ahmed, T; Crelling, J C

The reactivity of a coal of a given rank under the thermal processing conditions of pyrolysis or gasification can vary greatly depending on the relative abundance of the coal's chemically different organic components - the macerals. The chemical composition of a maceral is the dominant factor responsible for its thermochemical behavior. Since distinctly different photoacoustic responses are obtained from different coal macerals, considerable potential may exist to use these differences as aids in understanding and predicting the thermochemical behavior of coal. This paper reviews the results and theory behind photoacoustic microscopy performed by the Southern Illinois University at Carbondale.

• Research Organization: Southern Illinois Univ., Carbondale
• OSTI ID: 6214738
• Journal Information: Miner. Matters; (United States), Vol. 6:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
PHOTOACOUSTIC SPECTROSCOPY
THERMODYNAMIC PROPERTIES
MACERALS
CHEMICAL COMPOSITION
PHOTOACOUSTIC EFFECT
RESEARCH PROGRAMS
CHEMICAL REACTIONS
COAL GASIFICATION
MICROSCOPY
PYROLYSIS
CARBONACEOUS MATERIALS
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
MATERIALS
PHYSICAL PROPERTIES
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
010600* - Coal
Lignite
& Peat- Properties & Composition