Determination by PIXE of the Metallic Content in Vacuum Residue, Asphaltenes and Maltenes

Asphaltenes from Mexican Maya crude oil were precipitated during one agitation hour using n-C 5 , n-C 6 , n-C 7 , and n-C 8 at room temperature. Later the asphaltenes were washed with a soxhlet extraction system during 24 hr to remove the maltenes. The characterization of the vacuum residue, asphalt...

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Bibliographic Details
Published in:Petroleum science and technology 2007-11, Vol.25 (11), p.1391-1400
Main Authors: Camacho-Morán, V., Romero-Guzmán, E. T., López-Monroy, J., Ramírez-Torres, J. J., Villaseñor-Sánchez, P., Aspiazu-Fabian, J. A.
Format: Article
Language:English
Subjects:
Aluminum
Applied sciences
Asphaltenes
Crude oil
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
Iron
Maltenes
Nickel
Petroleum products, gas and fuels. Motor fuels, lubricants and asphalts
PIXE analysis
Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units
Residues
vacuum residue
X-rays
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Summary:Asphaltenes from Mexican Maya crude oil were precipitated during one agitation hour using n-C 5 , n-C 6 , n-C 7 , and n-C 8 at room temperature. Later the asphaltenes were washed with a soxhlet extraction system during 24 hr to remove the maltenes. The characterization of the vacuum residue, asphaltenes, and maltenes was realized using proton induced x-ray emission (PIXE) for the direct determination of the distributions and abundances of metals in the vacuum residue and their respective fractions. The analysis revealed that vacuum residue contains Fe, Al, V, and Ni, while the asphaltenes and maltenes mainly contain V and Ni.
ISSN:1091-6466
1532-2459
DOI:10.1080/10916460500528813