Rapid evaluation of asphaltene-paraffin content in crude oil by solid-state NMR
https://doi.org/10.26907/mrsej-26101
Abstract
The paper presents results demonstrating, using a series of crude oil samples, the negative impact of resin glass transition effects on the accurate determination of the solid-state component of the NMR signal attributed to crystalline paraffins. To address this issue, a modified NMR-based method for quantifying paraffins and asphaltenes is proposed. The approach involves separating the crystallization temperature of paraffins from the glass transition temperature of resins by plasticizing the resins through the preliminary addition of a specific amount of solvent or precipitant to the crude oil.
Keywords
About the Authors
D. S. Ivanov
Kazan Federal University
Russian Federation
Russian Federation
Kazan 420008
D. L. Melnikova
Kazan Federal University
Russian Federation
Russian Federation
Kazan 420008
A. S. Alexandrov
Kazan Federal University
Russian Federation
Russian Federation
Kazan 420008
M. M. Doroginitsky
Kazan Federal University
Russian Federation
Russian Federation
Kazan 420008
V. D. Skirda
Kazan Federal University
Russian Federation
Russian Federation
Kazan 420008
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Review
For citations:
Ivanov D.S., Melnikova D.L., Alexandrov A.S., Doroginitsky M.M., Skirda V.D. Rapid evaluation of asphaltene-paraffin content in crude oil by solid-state NMR. Magnetic Resonance in Solids. 2026;28(1):26101 (8 pp.). https://doi.org/10.26907/mrsej-26101
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