Systematic preparative methods for petroporphyrin purification

The isolation of porphyrins for geochemical research requires multistage concentrations from {le}0.1% to >95% purity. In meaningful studies of porphyrin concentration the criteria of enrichment, recovery, purity, and time, need to be considered. The present study was therefore undertaken with the...

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Bibliographic Details
Published in:Energy & fuels 1990-11, Vol.4 (6), p.695-699
Main Authors: Johnson, Andrew L, Freeman, D. H
Format: Article
Language:English
Subjects:
02 PETROLEUM
023000 - Petroleum- Properties & Composition
04 OIL SHALES AND TAR SANDS
040500 - Oil Shales & Tar Sands- Properties & Composition
Applied sciences
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHROMATOGRAPHY
Crude oil, natural gas and petroleum products
DATA
DEASPHALTING
Energy
ENERGY SOURCES
Exact sciences and technology
EXTRACTION
FOSSIL FUELS
FUELS
Geology and geochemistry. Geological and geochemical prospecting. Petroliferous series
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
NICKEL COMPOUNDS
OIL SHALES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PORPHYRINS
PRECIPITATION
PROCESSING
Prospecting and exploration
Prospecting and production of crude oil, natural gas, oil shales and tar sands
PURIFICATION
RECOVERY
SAMPLE PREPARATION
SEPARATION PROCESSES
SOLVENT EXTRACTION
STRUCTURAL CHEMICAL ANALYSIS
SULFONIC ACIDS
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
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Description
Summary:The isolation of porphyrins for geochemical research requires multistage concentrations from {le}0.1% to >95% purity. In meaningful studies of porphyrin concentration the criteria of enrichment, recovery, purity, and time, need to be considered. The present study was therefore undertaken with the aim of optimizing these parameters, in the systematic concentration of 31 ppm of mixed vanadyl porphyrins (VOP) from 2 kg of powdered New Albany shale. The following preparative scale operations were carried out: extraction, deasphaltation, medium-performance liquid chromatography (MPLC), precipitation, and solid phase bonded sulfonic acid (RSO{sub 3}H) extraction, which are frequently used to precede high-pressure liquid chromatography (HPLC). The overall scheme gave a 9,000-fold enrichment 60% overall recovery, 23% pure VOP, and required approximately 80 h (2 weeks) of time.
ISSN:0887-0624
1520-5029
DOI:10.1021/ef00024a013