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Transformation of Petroleum Asphaltenes in Supercritical Alcohols Studied via FTIR and NMR Techniques
- Source :
- Energy & Fuels. 32:2117-2127
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The aliphatic alcohols (methanol, ethanol, and 1- and 2-propanols) were used for the first time as a reaction media for the upgrading of crude oil asphaltenes. The process was realized in a batch reactor under supercritical conditions (at 350 °C). The three main fractions of the products (hexane- and benzene-soluble fractions, HSF and BSF, and insoluble residue, IR) were analyzed using attenuated total reflection Fourier tranform infrared (ATR-FTIR) and 1H and 13C nuclear magnetic resonance (NMR) spectroscopy to characterize structural changes of the initial asphaltenes (IA). According to NMR data, the aliphatics are the main part of the hexane-soluble fraction (HSF) and benzene-soluble fraction (BSF). The alcohols were appeared to influence the content of both aliphatics and aromatics in the products. The content of aliphatics in the HSF increases in the line from “lighter” to “heavier” alcohols used but reduces in the BSF. However, the content of aromatics in the HSF increases from “heavier” to “lighter...
- Subjects :
- endocrine system
Chemistry
General Chemical Engineering
Batch reactor
Analytical chemistry
Energy Engineering and Power Technology
Fraction (chemistry)
02 engineering and technology
021001 nanoscience & nanotechnology
Supercritical fluid
Hexane
chemistry.chemical_compound
Fuel Technology
020401 chemical engineering
Attenuated total reflection
Organic chemistry
Methanol
0204 chemical engineering
Fourier transform infrared spectroscopy
0210 nano-technology
Asphaltene
Subjects
Details
- ISSN :
- 15205029 and 08870624
- Volume :
- 32
- Database :
- OpenAIRE
- Journal :
- Energy & Fuels
- Accession number :
- edsair.doi...........bb50c46abe6b2c688c2c06943ed65a3c