Characterisation of Asphaltenes Extracted from an Indonesian Oil Sand Using NMR, DEPT and MALDI-TOF

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Abstract

This paper reports the findings of a preliminary study into the molecular structure and properties of asphaltenes extracted from an Indonesian oil sand, Buton Oil Sand. The molecular structural parameters of the asphaltenes were determined using liquid 13C NMR spectrum in combination with DEPT. The molecular weight distribution of the asphaltenes was measured using MALDI-TOF mass spectrometer. The results indicated that the representative molecular structure of the asphaltenes from Buton Oil Sand predominately contained only one PAH core of 6 rings with an average molecular weight around 800 Da. The results also showed that the use of 13C NMR spectrum/DEPT provided a powerful tool and useful method for characterising and predicting the molecular structures of asphaltenes.
Original languageEnglish
Pages (from-to)847-852
JournalEnergy Procedia
Volume75
DOIs
Publication statusPublished - 2015
Event7th International Conference on Applied Energy 2015 - Abu Dhabi, United Arab Emirates
Duration: 28 Mar 201531 Mar 2015
Conference number: 114863

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