Determination of molecular weight distributions of polymerized petroleum pitch by gel permeation chromatography with quinoline eluent

Journal Article · Wed Oct 01 04:00:00 EDT 1980 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50062a023· OSTI ID:7069963

Greinke, R A; O'Connor, L H

The technique of gel permeation chromatography (GPC) using quinoline eluent has been applied to measure molecular weight distributions in thermally polymerized petroleum pitches. The molecules present in the toluene-soluble fraction of polymeric pitch eluted ideally in quinoline. A study of low molecular weight model pericondensed polynuclear aromatic hydrocarbons, which elute nonideally in most GPC eluents, revealed that the elution volume in quinoline was closely related to the maximum length of the molecule. The molecules present in the toluene-insoluble-quinoline-soluble fraction of polymerized pitch eluded nonideally, and the elution volume was a function of the concentration of these molecules after reductive hydrogenation. A linear GPC polymerized pitch calibration curve was obtained for the 450 to 2000 molecular weight range. The technique is applicable for obtaining molecular weight distributions of petroleum pitch mesophases and semicokes which have quinoline-insoluble contents approaching 100%.

• Research Organization: Union Carbide Corp., Cleveland, OH
• OSTI ID: 7069963
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 52:12; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
AROMATICS
AZINES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COLLOIDS
DISPERSIONS
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
FURANS
GELS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGENATION
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PITCHES
POLYCYCLIC AROMATIC HYDROCARBONS
POLYMERS
PYRIDINES
QUINOLINES
SEPARATION PROCESSES
SOLVENT EXTRACTION
TETRAHYDROFURAN
TOLUENE