Anomalous solvent transport in macromolecular coal networks. Technical progress report, September 1-November 30, 1983

Technical Report · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6207101

Peppas, N A

The objective of this work is to characterize coal as a macromolecular structure and to connect that macromolecular structure to process behavior. In this work, we use solvents as a probe: (1) of the crosslinked macromolecular network structures in coal; and (2) of the coal as a glassy macromolecular system. Since the goal of this research group was to characterize the organic fraction of coal as a macromolecular system, it was necessary to perform coal separation techniques for isolation of this organic phase. The possible effects of these procedures on the coal system are considered in the experimental analysis. Types of treatments include grinding size separation, Soxhlet extraction, atmospheric oxidation and the Liotta O-methylation technique. Dynamic swelling or sorption studies yield information about the macromolecular substrate, such as its physical state and the time scale of major relaxation processes, and about the macromolecule/solvent systems, such as the diffusion coefficient of solvent into the macromolecule. The effects of varying experimental parameters on the dynamic swelling of coal systems with pyridine are examined. 49 references, 7 figures, 3 tables.

• Research Organization: Purdue Univ., Lafayette, IN (USA). School of Chemical Engineering
• DOE Contract Number: FG22-83PC60792
• OSTI ID: 6207101
• Report Number(s): DOE/PC/60792-T1; ON: DE85003871
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AZINES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMMINUTION
CROSS-LINKING
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FOSSIL FUELS
FUELS
GRINDING
HETEROCYCLIC COMPOUNDS
INFORMATION
MACHINING
MATERIALS
MEDIUM TEMPERATURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PARTICLE SIZE
POLYMERIZATION
PYRIDINE
PYRIDINES
RESEARCH PROGRAMS
SAMPLE PREPARATION
SEPARATION PROCESSES
SIZE
SOLVENT EXTRACTION
SORPTION
STRUCTURAL CHEMICAL ANALYSIS
SWELLING
TIME DEPENDENCE