Detailed analysis of feed and product asphaltenes in coal/bitumen co-processing

Conference · Sat Apr 01 04:00:00 EST 1989 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:5142255

Selucky, M L; Bizzotto, D; Manske, T ^[1]

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1. Alberta Research Council, Devon (Canada)

Asphaltenes, by definition, are a class of compounds from petroleum and bitumen, soluble in benzene, but insoluble in a non-polar solvent with surface tension of less than 25 dynes/cm{sup {minus}1}. The solvent originally used for asphaltene precipitation was n-pentane. Today, a host of standard procedures are available for the separation of asphaltenes. In a previous paper it was shown by combined GPC, TGA and ESR that the properties of the product asphaltene radical from coal/bitumen co-processing substantially differed from those of the radical from coal/anthracene oil reaction and were practically identical with the properties of asphaltenes derived from bitumen alone. Since this finding puts in question the most frequently used formulation of the reaction path in a co-processing reaction, a more detailed analysis of the feed and product asphaltenes was undertaken to shed more light on the scope and limitations of their analytical tools in elucidating asphaltenes chemistry. This paper describes the implementation of asphaltene analysis, using three related asphaltenes to demonstrate method sensitivity to structural differences.

• OSTI ID: 5142255
• Report Number(s): CONF-8904130--
• Conference Information: Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA) Journal Volume: 34:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
04 OIL SHALES AND TAR SANDS
040500 -- Oil Shales & Tar Sands-- Properties & Composition
ASPHALTENES
ASPHALTS
BITUMENS
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHROMATOGRAPHY
COAL
COPROCESSING
DATA
ELECTRON SPIN RESONANCE
ENERGY SOURCES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOSSIL FUELS
FOURIER TRANSFORM SPECTROMETERS
FUELS
GEL PERMEATION CHROMATOGRAPHY
HYDROGEN 1
HYDROGEN ISOTOPES
INFORMATION
INFRARED SPECTRA
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
MEASURING INSTRUMENTS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
RESONANCE
SEPARATION PROCESSES
SPECTRA
SPECTROMETERS
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
TAR