Pyrolysis of simple coal model compounds containing aromatic carboxylic acids: Does decarboxylation lead to cross-linking?

Technical Report · Thu Feb 01 00:00:00 EST 1996

DOI:https://doi.org/10.2172/197833· OSTI ID:197833

Eskay, T P; Britt, P F; Buchanan, III, A C

The thermolysis of two aromatic carboxylic acids 1,2-(3,3`-dicarboxyphenyl)ethane (2) have been investigated at 400{degree} C as models of carboxylic acids in low rank coals. The major decomposition pathway observed is decarboxylation, which mainly occurs by an ionic pathway. This decarboxylation route does not lead to any significant amount of coupling or high molecular weight products that would be indicative of cross-linking products in coal. The pyrolysis of 1 and 2 will be investigated under a variety of conditions that better mimic the enviromment found in coal to further delineate the role that decarboxylation plays in coal cross-linking chemistry.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 197833
• Report Number(s): CONF-960376-4; ON: DE96005972
• Resource Relation: Conference: Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996; Other Information: PBD: [1996]
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
40 CHEMISTRY
COAL
PYROLYSIS
CARBOXYLIC ACIDS
STRUCTURAL MODELS
AROMATICS
CROSS-LINKING
DECARBOXYLATION
CHEMICAL REACTION KINETICS
EXPERIMENTAL DATA
TRACER TECHNIQUES
DEUTERIUM