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Title: Molecular characterization and fingerprinting of vanadyl porphyrin and non-porphyrin compounds in the asphaltenes of heavy crude petroleums using HPLC-GFAA analysis

Abstract

High performance liquid chromatography coupled with graphite furnace atomic absorption (HPLC-GFAA) analysis were used to study the precipitated asphaltene fraction of four heavy crude petroleums. Prudhoe Bay and Wilmington crude oils from Alaska and California, respectively, have low vanadium and asphaltene concentrations. Boscan and Cerro Negro are Venezuelan crudes with high levels of vanadium and asphaltenes. The emphasis of this study is the molecular characterization of classes of vanadyl compounds, with special emphasis placed on differentiating the locations of non-porphyrin and porphyrin compounds in the HPLC-GFAA analyses of the asphaltenes and their solvent extracts. Steric exclusion chromatography (SEC) columns were used to determine the molecular weight distribution of vanadium in the asphaltenes and extracts. Fingerprints obtained from SEC-HPLC-GFAA analysis of asphaltenes or normal and reverse phase HPLC-GFAA analysis of polar extracts provided information on the composition of the asphaltines. 122 references, 27 figures, 7 tables.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Berkeley Lab., CA (USA)
OSTI Identifier:
5458061
Report Number(s):
LBL-16867
ON: DE84004967
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions are illegible in microfiche products. Thesis. Submitted by B.K. Wines
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ASPHALTENES; CHEMICAL ANALYSIS; SOLVENT EXTRACTION; PETROLEUM; PORPHYRINS; ABSORPTION SPECTROSCOPY; LIQUID COLUMN CHROMATOGRAPHY; STRUCTURAL CHEMICAL ANALYSIS; VANADIUM COMPOUNDS; CORRELATIONS; EXPERIMENTAL DATA; MOLECULAR WEIGHT; ORGANOMETALLIC COMPOUNDS; ASPHALTS; BITUMENS; CARBOXYLIC ACIDS; CHROMATOGRAPHY; DATA; ENERGY SOURCES; EXTRACTION; FOSSIL FUELS; FUELS; HETEROCYCLIC ACIDS; HETEROCYCLIC COMPOUNDS; INFORMATION; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OTHER ORGANIC COMPOUNDS; SEPARATION PROCESSES; SPECTROSCOPY; TAR; TRANSITION ELEMENT COMPOUNDS; 023000* - Petroleum- Properties & Composition; 400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)

Citation Formats

Wines, B K, Vermeulen, T, and Fish, R H. Molecular characterization and fingerprinting of vanadyl porphyrin and non-porphyrin compounds in the asphaltenes of heavy crude petroleums using HPLC-GFAA analysis. United States: N. p., 1983. Web.
Wines, B K, Vermeulen, T, & Fish, R H. Molecular characterization and fingerprinting of vanadyl porphyrin and non-porphyrin compounds in the asphaltenes of heavy crude petroleums using HPLC-GFAA analysis. United States.
Wines, B K, Vermeulen, T, and Fish, R H. 1983. "Molecular characterization and fingerprinting of vanadyl porphyrin and non-porphyrin compounds in the asphaltenes of heavy crude petroleums using HPLC-GFAA analysis". United States.
@article{osti_5458061,
title = {Molecular characterization and fingerprinting of vanadyl porphyrin and non-porphyrin compounds in the asphaltenes of heavy crude petroleums using HPLC-GFAA analysis},
author = {Wines, B K and Vermeulen, T and Fish, R H},
abstractNote = {High performance liquid chromatography coupled with graphite furnace atomic absorption (HPLC-GFAA) analysis were used to study the precipitated asphaltene fraction of four heavy crude petroleums. Prudhoe Bay and Wilmington crude oils from Alaska and California, respectively, have low vanadium and asphaltene concentrations. Boscan and Cerro Negro are Venezuelan crudes with high levels of vanadium and asphaltenes. The emphasis of this study is the molecular characterization of classes of vanadyl compounds, with special emphasis placed on differentiating the locations of non-porphyrin and porphyrin compounds in the HPLC-GFAA analyses of the asphaltenes and their solvent extracts. Steric exclusion chromatography (SEC) columns were used to determine the molecular weight distribution of vanadium in the asphaltenes and extracts. Fingerprints obtained from SEC-HPLC-GFAA analysis of asphaltenes or normal and reverse phase HPLC-GFAA analysis of polar extracts provided information on the composition of the asphaltines. 122 references, 27 figures, 7 tables.},
doi = {},
url = {https://www.osti.gov/biblio/5458061}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Aug 01 00:00:00 EDT 1983},
month = {Mon Aug 01 00:00:00 EDT 1983}
}

Technical Report:
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