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Assessing the effect of crushing on the X-ray diffraction pattern of the asphaltene sample

Year: 1399
COI: OGPC03_022
Language: EnglishView: 67
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Zahra Sadeghtabaghi - Ph.D. candidate in Petroleum Engineering, Amirkabir University of Technology (AUT),Tehran, Iran
Mohsen Talebkeikhah - MSc in Petroleum Engineering, Amirkabir University of Technology (AUT), Tehran, Iran
Ahmad Reza Rabbani - Ph.D. in Petroleum Engineering, Professor at Amirkabir University of Technology (AUT),Tehran, Iran


Asphaltenes are the most polarized crude oil component and are defined generally based on their solubility, not chemical characterizations. Asphaltenes are considered troublous in the oil industry because they tend to precipitate and deposit. It has been proved that the chemical reactivity of asphaltenes depends on their molecular structure. Asphaltenes' carbonaceous structures are assessed by the X-Ray diffraction technique, which is a major precise technique and nondestructive literally. XRD provides the structural parameters of asphaltene through the detected peaks' position. dm (distance between two aromatic sheets), dr (distance between saturate chains), Lc (average height of cluster perpendicular to the sheets plain), La (diameter of aromatic sheets), M (number of aromatic sheets in a cluster), Ra (number of aromatic rings in aromatic sheets), Cau (number of carbon in the aromatic unit), and fa (aromaticity index) are structural parameters obtained by this method. This paper aims to assess the effect of particle sizes of the analyzed asphaltene sample. The results indicate that asphaltene samples' crushing doesn’t have any tangible impact on the XRD pattern of asphaltene samples.


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Sadeghtabaghi, Zahra and Talebkeikhah, Mohsen and Rabbani, Ahmad Reza,1399,Assessing the effect of crushing on the X-ray diffraction pattern of the asphaltene sample,Third Persian Gulf Oil, Gas and Petrochemical Conference,Bushehr,

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