Nature and reactivity of hexane soot
Soot produced from the combustion of fossil fuels, widely distributed in the atmosphere, is significantly different from most carbons for which the surface structure and/or reactivity have been studied. Soot derived from the combustion of reagent n-hexane has been chosen as a laboratory model of petroleum fuel for the purpose of this study. The composition and surface structure of hexane soot have been examined by FT-IR and several other analytical techniques. The infrared studies have been made on the particulate, as collected from the flame, under a variety of conditions of temperature, pressure, and gaseous environments. Successive extraction of soluble components with a suite of solvents has been followed by GC, GC/MS, FT-IR, UV/vis, fluorescence, and NMR analysis of these extracts. From these studies and scanning electron micrographs, some understanding of the structure and reactivity of this material has emerged. A significant portion of the soot is extractable as polynuclear aromatic compounds, while the non-extractable solid structure with both aromatic and aliphatic portions contains such carbon-oxygen functionalities as acid anhydride, carbonyl and ether linkages. A model of a hexane soot segment as formed in flame is proposed on the basis of this work.
- OSTI ID:
- 5765392
- Country of Publication:
- United States
- Language:
- English
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Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKANES
CARBON COMPOUNDS
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
ELECTRON MICROSCOPY
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY SOURCES
EXPERIMENTAL DATA
FLAMES
FLUORESCENCE SPECTROSCOPY
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
HEXANE
HYDROCARBONS
INFORMATION
INFRARED SPECTRA
KINETICS
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MATHEMATICAL MODELS
MICROSCOPY
NONMETALS
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN
PARTICLES
PARTICULATES
PETROLEUM
PRESSURE DEPENDENCE
QUALITATIVE CHEMICAL ANALYSIS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
RESONANCE
SCANNING ELECTRON MICROSCOPY
SEPARATION PROCESSES
SOOT
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
TEMPERATURE DEPENDENCE