2006
DOI: 10.1016/j.fuel.2005.05.021
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Molecular size and weight of asphaltene and asphaltene solubility fractions from coals, crude oils and bitumen

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Cited by 243 publications
(327 citation statements)
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“…2 are similar to those found in the literature (Ralston et al 1996;Groenzin and Mullins 1999;Badre et al 2006). The peak location exhibits a shift that can be explained in terms of the aromatic rings number and of the condensation rate of the polyaromatic structure.…”
Section: Structural Characterizationsupporting
confidence: 87%
See 1 more Smart Citation
“…2 are similar to those found in the literature (Ralston et al 1996;Groenzin and Mullins 1999;Badre et al 2006). The peak location exhibits a shift that can be explained in terms of the aromatic rings number and of the condensation rate of the polyaromatic structure.…”
Section: Structural Characterizationsupporting
confidence: 87%
“…This indicates that the two investigated asphaltene fractions were different in aromatic hydrocarbon ring number and in the aromatic ring arrangement. The analysis of the present results in terms of the literature data of the shortest emission wavelength of a series of polyaromatic compounds (Badre et al 2006) suggests that the (AS) DP and (AS) WL asphaltene samples contain 3-4 and 5-6 fused aromatic rings, respectively. 1 H-NMR spectra presented in Fig.…”
Section: Structural Characterizationmentioning
confidence: 60%
“…The values for the R1 and R2 fractions are essentially the same while those for the R3 samples are slightly higher but still much lower than those for the corresponding asphaltene components. Here we note that the GPC MW n values for the resin subfractions R3 are of the order of 700 Da, close to the value determined for asphaltenes by time resolved fluorescence depolarization (FD) spectroscopy (Groenzin and Mullins, 2000;Badre et al, 2006). In this regard it would be instructive to measure the molecular weights of these resin fractions by the same technique.…”
Section: Resin Sub-fractionssupporting
confidence: 74%
“…[26] Another solvent employed as eluent is N-methyl-2-pyrrolidinone (NMP). [27][28][29][30] However, while NMP is a good solvent for coal derivatives, the solvency of NMP has been found to be limited for petroleum asphaltenes. NMP insoluble asphaltene fractions have been found to be have larger size than soluble fractions.…”
Section: Introductionmentioning
confidence: 99%