Coal thermolysis modeling: The effect of cross-linking on the thermal decomposition of 1,3-diphenylpropane

Conference · Wed Aug 01 04:00:00 EDT 1990 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (United States)

OSTI ID:6970412

Britt, P F; Buchanan, III, A C; Hagaman, E W; Biggs, C A ^[1]

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1. Oak Ridge National Lab., TN (United States)

In an effort to model the effects of restricted diffusion and cross-linking on the thermal decomposition of polymethylene units linking aromatic moieties in coal, a surface-attached, cross-linked 1,3-diphenylpropane has been synthesized through the condensation of p, p{prime}-HOPh(CH{sub 2}){sub 3}PhOH with a silica surface. Thermolysis of DPP at 375 C has been studied at a variety of surface coverages in which the fraction of diattached DPP varies from ca. 24 to 86% with complete diattachment not yet achieved. The influence of cross-linking and free phenolic functionality (Ph(CH{sub 2}){sub 3}PhOH) on the rate of decomposition and product distribution will be discussed and compared to the thermolysis of Ph(CH{sub 2}){sub 3}Ph as well as fluid phase DPP. Solid state CP/MAS {sup 13}C NMR will be used to prove the chemical composition and motional behavior of the substrate on the surface and their potential mechanistic impact.

• OSTI ID: 6970412
• Report Number(s): CONF-900802--
• Conference Information: Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (United States) Journal Volume: 35:4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010409* -- Coal
Lignite
& Peat-- Pyrolysis & Carbonization-- (1987-)
AROMATICS
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
CROSS-LINKING
DECOMPOSITION
DIFFUSION
ENERGY SOURCES
EVEN-ODD NUCLEI
FOSSIL FUELS
FUELS
ISOTOPES
KINETICS
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
MATHEMATICAL MODELS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ORGANIC COMPOUNDS
POLYMERIZATION
PYROLYSIS
REACTION KINETICS
RESONANCE
STABLE ISOTOPES
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THERMOCHEMICAL PROCESSES