Determination of molecular weight distribution of pitches by high performance GPC (gel permeation chromatography)
Conference
·
· American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)
OSTI ID:5138185
- Institute of Coal Chemistry, Shanxi (China)
The determination of the molecular weight distribution (MWD) of pitches and resids is important for industry utilization of heavy hydrocarbons. In literature many methods were proposed for determining the MWD of various pitches by gel permeation chromatography (GPC), in which some authors take the number average molecular weights (Mn) from vapor pressure osmometry method (VPO) vs. elution volume (Ve) as the calibration curve of test samples, the error was about 30% (2,5). In addition, in most GPC chromatograms, there was only one diffused peak with tailing and there were few reports about high performance GPC. In this paper a method for determining MWD of resids, heavy oils and pitch, etc., is established by high performance GPC and VPO. The Mn(S) of test samples determined by GPC calibration curve established is in good agreement with Mn(V) from VPO. The average relative deviation is 3.16% and the largest relative deviation is 7.91%. In addition, present method has the advantages of rapid and high resolution.
- OSTI ID:
- 5138185
- 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
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· Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)
·
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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
CALIBRATION
CHROMATOGRAPHY
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GEL PERMEATION CHROMATOGRAPHY
INFORMATION
MOLECULAR WEIGHT
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PHYSICAL PROPERTIES
PITCHES
RESOLUTION
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE
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
CALIBRATION
CHROMATOGRAPHY
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GEL PERMEATION CHROMATOGRAPHY
INFORMATION
MOLECULAR WEIGHT
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PHYSICAL PROPERTIES
PITCHES
RESOLUTION
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE