Relation betweenn nanoscale structure of asphaltene aggregates and their macroscopic solution properties (Record no. 171200)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02149nab a2200205 4500 |
| 008 - CÓDIGOS DE INFORMACIÓN DE LONGITUD FIJA - INFORMACIÓN GENERAL | |
| Campo de control de longitud fija | 260224s2009 xxu |
| 245 00 - TITULO | |
| Título | Relation betweenn nanoscale structure of asphaltene aggregates and their macroscopic solution properties |
| 260 ## - PUBLICACION, DISTRIBUCION, ETC | |
| Lugar de publicación, distribución, etc. | |
| Nombre de publicador, distribuidor, etc. | |
| Fecha de publicación, distribución, etc. | sep./oct. 2009 |
| 270 ## - FECHA DE CARGA | |
| Fecha de carga | 17/06/2010 ; 17/06/2010 |
| 300 ## - DESCRIPCION FISICA | |
| Otra extensión | 12 p. ; 617-628 |
| 520 ## - RESUMEN, ETC | |
| Resumen | Transcripción del resumen del autor. Some peculiar macroscopic properties of crude oils are ascribed to their densest, heaviest and most polar fraction: the asphaltenes. The comprehension of the origin of these properties relies on a fine structural description of these fractions. We present a nanometre length scale characterisation of asphaltene solutions based on new or recent scattering experiments (X-rays and neutrons) from which structural parameters of asphaltene aggregates (Mw, Rg and A2) are extracted. The mutual dependence of these parameters is consistent with a mass fractal model. This single model accounts for very different macroscopic solution properties. Solvent trapping in fractal aggregates enables asphaltene solution viscosity to be fully predicted as a function of asphaltene concentration. Asphaltene adsorbs at liquid-liquid and liquid-solid interfaces as a monolayer whose thickness is of the same order of magnitude as the characteristic size of the asphaltene aggregate in bulk. Adsorption isotherm analysis, neutron reflectivity experiments and contrast-matching SANS allow one to highlight a densification of the asphaltene aggregates in the adsorbed layer in comparison with the solvated aggregates in bulk. Finally, the repulsive/attractive interaction balance between aggregates can be related to the relative stability of water in oil emulsions and to the stability of hydro-conversion effluents. This structure/property approach allows one to assess the mass fractal model which is discussed. |
| 581 ## - ESTADO DE COLECCIÓN | |
| Estado de colección | 5 |
| 773 0# - CORRECCIÓN | |
| Título | Oil and Gas Science and Technology |
| Partes relacionadas | 64 |
| 942 ## - DESC. DE MATERIAL | |
| Tipo de item KOHA | Artículo de Revista |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Barré, L. |
| 9 (RLIN) | 12689 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Jestin, J. |
| 9 (RLIN) | 42998 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Morisset, A. |
| 9 (RLIN) | 42999 |
| Biblioteca propietaria | Biblioteca actual | Fecha de adquisición | Inventario | Total de préstamos | Inventario | Fecha de carga | Tipo de item KOHA |
|---|---|---|---|---|---|---|---|
| Biblioteca Alejandro Angel Bulgheroni | Biblioteca Alejandro Angel Bulgheroni | 05/03/2026 | 200046058 | 200046058 | 05/03/2026 | Artículo de Revista |
