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Figure 1

From: Water versus Asphaltenes; Liquid–Liquid and Solid–Liquid Molecular Interactions Unravel the Mechanisms behind an Improved Oil Recovery Methodology

Figure 1

Characterisation of asphaltene isolated from crude oil BR, (a) representative 13C 100.6 MHz NMR spectra, (b) representative 1H 400.1 MHz NMR spectra, (c) FTIR spectra of asphaltene with representative structures assigned to related spectra range, (d) Determined Cp/Car ratio as a function of total number of aromatic rings in studied asphaltene molecular structure, (e) ESEM micrograph of asphaltene with white scale bar of 20 µm, EDX elemental mapping of (f) C k mapping, (g) S k mapping, and (h) O k mapping, (i) hypothetical asphaltene molecular structure derived based on the attained advanced spectroscopy data. No effort was accomplished to fit the structure to the molecular weight, solubility, or further physical circumscriptions.

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