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A Comparative Analysis of Vanadyl Porphyrins Isolated from Heavy Oil Asphaltenes with High and Low Vanadium Content
https://orcid.org/https://orcid.org/0000-0002-2845-2573
https://orcid.org/https://orcid.org/0000-0003-4837-2607
https://orcid.org/https://orcid.org/0000-0002-6419-708X
https://orcid.org/https://orcid.org/0000-0002-7074-6508
https://orcid.org/https://orcid.org/0000-0003-1519-6600
https://orcid.org/https://orcid.org/0000-0003-2665-526X
https://orcid.org/https://orcid.org/0000-0003-0504-5569
The paper describes an investigation of the composition of purified vanadyl porphyrins recovered from heavy oil asphaltenes. For this purpose, high-vanadium crude oils from the Smorodinskoye field, Russia, were compared with low-vanadium crude oils from the Varadero field, Cuba. Based on the comparison of the FT-IR spectra of the asphaltenes, the distinctive features of their structural-group composition were identified. The vanadium content in the Smorodinskoye heavy oil asphaltenes was demonstrated to be 19-fold higher than that in the Varadero heavy oil asphaltenes. To recover and purify vanadyl porphyrins from the asphaltenes, extraction with N,N-dimethylformamide (DMF) followed by two-step column chromatography on silica gel and sulfocationite was employed. The compositions of the vanadyl porphyrin concentrates extracted from the heavy oil asphaltenes differing in vanadium content were identified using MALDI mass spectrometry, FT-IR spectroscopy, and UV-Visible spectroscopy.
A Comparative Analysis of Vanadyl Porphyrins Isolated from Heavy Oil Asphaltenes with High and Low Vanadium Content
https://orcid.org/https://orcid.org/0000-0002-2845-2573
https://orcid.org/https://orcid.org/0000-0003-4837-2607
https://orcid.org/https://orcid.org/0000-0002-6419-708X
https://orcid.org/https://orcid.org/0000-0002-7074-6508
https://orcid.org/https://orcid.org/0000-0003-1519-6600
https://orcid.org/https://orcid.org/0000-0003-2665-526X
https://orcid.org/https://orcid.org/0000-0003-0504-5569
The paper describes an investigation of the composition of purified vanadyl porphyrins recovered from heavy oil asphaltenes. For this purpose, high-vanadium crude oils from the Smorodinskoye field, Russia, were compared with low-vanadium crude oils from the Varadero field, Cuba. Based on the comparison of the FT-IR spectra of the asphaltenes, the distinctive features of their structural-group composition were identified. The vanadium content in the Smorodinskoye heavy oil asphaltenes was demonstrated to be 19-fold higher than that in the Varadero heavy oil asphaltenes. To recover and purify vanadyl porphyrins from the asphaltenes, extraction with N,N-dimethylformamide (DMF) followed by two-step column chromatography on silica gel and sulfocationite was employed. The compositions of the vanadyl porphyrin concentrates extracted from the heavy oil asphaltenes differing in vanadium content were identified using MALDI mass spectrometry, FT-IR spectroscopy, and UV-Visible spectroscopy.
A Comparative Analysis of Vanadyl Porphyrins Isolated from Heavy Oil Asphaltenes with High and Low Vanadium Content
https://orcid.org/https://orcid.org/0000-0002-2845-2573
https://orcid.org/https://orcid.org/0000-0003-4837-2607
https://orcid.org/https://orcid.org/0000-0002-6419-708X
https://orcid.org/https://orcid.org/0000-0002-7074-6508
https://orcid.org/https://orcid.org/0000-0003-1519-6600
https://orcid.org/https://orcid.org/0000-0003-2665-526X
https://orcid.org/https://orcid.org/0000-0003-0504-5569
The paper describes an investigation of the composition of purified vanadyl porphyrins recovered from heavy oil asphaltenes. For this purpose, high-vanadium crude oils from the Smorodinskoye field, Russia, were compared with low-vanadium crude oils from the Varadero field, Cuba. Based on the comparison of the FT-IR spectra of the asphaltenes, the distinctive features of their structural-group composition were identified. The vanadium content in the Smorodinskoye heavy oil asphaltenes was demonstrated to be 19-fold higher than that in the Varadero heavy oil asphaltenes. To recover and purify vanadyl porphyrins from the asphaltenes, extraction with N,N-dimethylformamide (DMF) followed by two-step column chromatography on silica gel and sulfocationite was employed. The compositions of the vanadyl porphyrin concentrates extracted from the heavy oil asphaltenes differing in vanadium content were identified using MALDI mass spectrometry, FT-IR spectroscopy, and UV-Visible spectroscopy.
A Comparative Analysis of Vanadyl Porphyrins Isolated from Heavy Oil Asphaltenes with High and Low Vanadium Content
Pet. Chem.
Yakubova, S. G. (Autor:in) / Abilova, G. R. (Autor:in) / Tazeeva, E. G. (Autor:in) / Tazeev, D. I. (Autor:in) / Mironov, N. A. (Autor:in) / Milordov, D. V. (Autor:in) / Yakubov, M. R. (Autor:in)
Petroleum Chemistry ; 62 ; 83-93
01.01.2022
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
The structure of vanadyl porphyrins of petroleum
| Elsevier | 1979
Differentiation of heavy oils according to the vanadium and nickel content in asphaltenes and resins
| Springer Verlag | 2017