Calorimetric Probing of n-Alkane−Petroleum Asphaltene Interactions
In this work, we report results of calorimetric studies on interactions between petroleum asphaltenes and n-alkanes. It was observed that mixing of n-alkanes with asphaltenes leads to exothermic thermal effects. This effect is irrespective of the asphaltene state and occurs either with precipitated...
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| Veröffentlicht in: | Energy & fuels 2005-11, Vol.19 (6), p.2474-2479 |
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| container_title | Energy & fuels |
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| creator | Mahmoud, R Gierycz, P Solimando, R Rogalski, M |
| description | In this work, we report results of calorimetric studies on interactions between petroleum asphaltenes and n-alkanes. It was observed that mixing of n-alkanes with asphaltenes leads to exothermic thermal effects. This effect is irrespective of the asphaltene state and occurs either with precipitated asphaltenes or with solutions containing dissolved asphaltenes. This phenomenon is explained by a partial immobilization of n-alkanes in the protecting shell formed by aliphatic lateral chains of asphaltenes. The proposed mechanism of interactions between n-alkanes and lateral alkyl chains of asphaltenes contributes to understanding the role of n-alkanes in nucleation of the wax deposition and of the asphaltene flocculation. |
| doi_str_mv | 10.1021/ef050161u |
| format | Article |
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It was observed that mixing of n-alkanes with asphaltenes leads to exothermic thermal effects. This effect is irrespective of the asphaltene state and occurs either with precipitated asphaltenes or with solutions containing dissolved asphaltenes. This phenomenon is explained by a partial immobilization of n-alkanes in the protecting shell formed by aliphatic lateral chains of asphaltenes. The proposed mechanism of interactions between n-alkanes and lateral alkyl chains of asphaltenes contributes to understanding the role of n-alkanes in nucleation of the wax deposition and of the asphaltene flocculation.</description><identifier>ISSN: 0887-0624</identifier><identifier>EISSN: 1520-5029</identifier><identifier>DOI: 10.1021/ef050161u</identifier><identifier>CODEN: ENFUEM</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Applied sciences ; Constitution and properties of crude oils, shale oils, natural gas and bitumens. 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It was observed that mixing of n-alkanes with asphaltenes leads to exothermic thermal effects. This effect is irrespective of the asphaltene state and occurs either with precipitated asphaltenes or with solutions containing dissolved asphaltenes. This phenomenon is explained by a partial immobilization of n-alkanes in the protecting shell formed by aliphatic lateral chains of asphaltenes. The proposed mechanism of interactions between n-alkanes and lateral alkyl chains of asphaltenes contributes to understanding the role of n-alkanes in nucleation of the wax deposition and of the asphaltene flocculation.</description><subject>Applied sciences</subject><subject>Constitution and properties of crude oils, shale oils, natural gas and bitumens. 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| source | American Chemical Society Journals |
| subjects | Applied sciences Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics Crude oil, natural gas and petroleum products Energy Exact sciences and technology Fuels |
| title | Calorimetric Probing of n-Alkane−Petroleum Asphaltene Interactions |
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