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http://repositoriodigital.ipn.mx/handle/123456789/10688| Título : | STRUCTURAL CHARACTERIZATION OF ASPHALTENES OBTAINED FROM HYDROPROCESSED CRUDE OILS BY SEM AND TEM |
| Palabras clave : | Asphaltenes Heavy crude Hydrotreating SEM and TEM |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | Energy & Fuels |
| Descripción : | Asphaltenes from Maya crude and its hydroprocessed oils at different reaction conditions were precipitated
and studied by scanning and transmission electron microscopy (SEM and TEM). In order to better understand
the changes occured in asphaltene structure during hydroprocessing the crude oil fractionation procedure with
solvents was used to separate asphaltenes based on their solubility properties. Different asphaltene morphologies
were observed depending on the mixture of solvents used for fractionating asphaltenes and reaction conditions
at which crude oil was hydroprocessed. A comparison between asphaltenes from hydroprocessed and pure
Maya crude oil was carried out on the way to distinguish morphological changes at microscopic level. It was
observed that removal of alkyl chains during hydroprocessing makes asphaltenes suffer a rearrangement in
solid state favoring stacking of aromatic cores as determined by TEM. SEM microscopy allowed different
fractions of asphaltenes for seeing that they are constituted by agglomerate particles, porous structures, and
smooth surfaces. http://pubs.acs.org/doi/abs/10.1021/ef8005405 |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/10688 |
| Otros identificadores : | 0887-0624 http://hdl.handle.net/123456789/169 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| art 3.pdf | 35.85 kB | Adobe PDF | Visualizar/Abrir |
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