Application of In Situ ATR-FTIR Sресtrоsсору for Determination of Wax Aрреаrаnсе Tеmреrаturе at High-Prеssurе СО2 Conditions Full article
| Journal |
Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
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| Output data | Year: 2022, Volume: 62, Number: 10, Pages: 1162–1170 Pages count : 9 DOI: 10.1134/S0965544122100176 | ||||||
| Tags | ATR; FTIR spectroscopy; paraffins; wax appearance temperature (WAT); CO2 pressure | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 21-13-00171 (121060300118-3) |
Abstract:
Attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy was for the first time employed to investigate in situ paraffin crystallization under CO2 high-pressure and to evaluate a critical parameter—wax appearance temperature (WAT). To determine the WAT under pressure, conventional calculation methods based on changes in the band of rocking vibrations of CH2 group were used. Using model 10 wt % paraffin solutions in n-dodecane, temperature effects were investigated under CO2 pressures of 10, 20, 30, and 40 atm. It was experimentally confirmed that an increase in the CO2 pressure reduces the WAT. Furthermore, the plot of peak intensity of the spectral band attributed to dissolved CO2 as a function of temperature showed a maximum that can serve as an additional WAT indicator. This enhances the measurement accuracy and the reliability of WAT evaluation.
Cite:
Shalygin A.S.
, Morozov E.V.
, Martyanov O.N.
Application of In Situ ATR-FTIR Sресtrоsсору for Determination of Wax Aрреаrаnсе Tеmреrаturе at High-Prеssurе СО2 Conditions
Petroleum Chemistry. 2022. V.62. N10. P.1162–1170. DOI: 10.1134/S0965544122100176 WOS Scopus РИНЦ AN OpenAlex
Application of In Situ ATR-FTIR Sресtrоsсору for Determination of Wax Aрреаrаnсе Tеmреrаturе at High-Prеssurе СО2 Conditions
Petroleum Chemistry. 2022. V.62. N10. P.1162–1170. DOI: 10.1134/S0965544122100176 WOS Scopus РИНЦ AN OpenAlex
Original:
Шалыгин А.С.
, Морозов Е.В.
, Мартьянов О.Н.
Применение метода in situ ИК-Фурье-спектроскопии нарушенного полного внутреннего отражения для определения температуры начала кристаллизации парафинов под давлением СО2
Нефтехимия. 2022. Т.62. №6. С.859-869. DOI: 10.31857/S0028242122060089 РИНЦ OpenAlex
Применение метода in situ ИК-Фурье-спектроскопии нарушенного полного внутреннего отражения для определения температуры начала кристаллизации парафинов под давлением СО2
Нефтехимия. 2022. Т.62. №6. С.859-869. DOI: 10.31857/S0028242122060089 РИНЦ OpenAlex
Dates:
| Submitted: | Sep 21, 2022 |
| Published print: | Oct 1, 2022 |
| Accepted: | Dec 8, 2022 |
| Published online: | Jan 10, 2023 |
Identifiers:
| Web of science: | WOS:000911904500002 |
| Scopus: | 2-s2.0-85145935542 |
| Elibrary: | 50333034 |
| Chemical Abstracts: | 2023:87839 |
| OpenAlex: | W4315485200 |