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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhao, Yansong Paso, Kristofer rrman, Jens Ali, Hassan Sørland, Geir Sjöblom, Johan |
| Copyright Year | 2015 |
| Abstract | Wax crystallization processes are investigated using differential scanning calorimetry, near-infrared spectroscopy, and nuclear magnetic resonance spectroscopy. The performance of a chemical additive is assessed using calorimetry and NMR. Heat flows of model waxy oils are obtained using differential scanning calorimetry, providing the wax appearance temperature and crystallization profiles. The effect of cooling rate, wax content, asphaltene, and chemical additive on the wax appearance temperature is investigated. The wax appearance temperature increases with increasing wax contents. The wax appearance temperature decreases in the presence of chemical additive, effectively increasing the instantaneous supersaturation. Furthermore, near-infrared spectroscopy and nuclear magnetic resonance spectroscopy are utilized to determine wax appearance temperature. The NMR experiments quantify liquid and solid fractions at thermal equilibrium conditions, effectively circumventing the need for dynamic thermal techniques. |
| Starting Page | 1427 |
| Ending Page | 1433 |
| Page Count | 7 |
| File Format | |
| ISSN | 13886150 |
| Journal | Journal of thermal analysis |
| Volume Number | 120 |
| Issue Number | 2 |
| e-ISSN | 15882926 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2015-02-17 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | DSC NIR NMR Wax appearance temperature Wax crystallization Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Condensed Matter Physics |
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