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Study of self-aggregation of coal derived asphaltene in organic solvents: A fluorescence approach
- Source :
-
Fuel . Nov2007, Vol. 86 Issue 16, p2528-2534. 7p. - Publication Year :
- 2007
-
Abstract
- Abstract: Fluorescence spectra of coal derived asphaltenes sourced from Barari coke plant situated at Dhanbad, India, have been studied as a function of concentration in benzene, toluene and carbon tetrachloride with an eye to study the self-aggregation of the solute. Aggregation has been found to be a gradual process and the concentration characterizing onset of aggregation process coincide for the solvents. The critical aggregation constants (CAC) appear to be ca 90–100 and 180–200 for all the solvents. A small red shift of fluorescence band is observed when traces of water (∼0.05%, v/v) are present in carbon tetrachloride solution. [Copyright &y& Elsevier]
- Subjects :
- *ASPHALTENE
*ORGANIC solvents
*FLUORESCENCE
*BITUMEN
Subjects
Details
- Language :
- English
- ISSN :
- 00162361
- Volume :
- 86
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Fuel
- Publication Type :
- Academic Journal
- Accession number :
- 27051870
- Full Text :
- https://doi.org/10.1016/j.fuel.2007.02.027