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Evidence of selective asphaltene subfraction adsorption on SiO 2 nanoparticles studied by UV-vis absorbance and fluorescence spectroscopy
- Source :
- Journal of Dispersion Science and Technology, Journal of Dispersion Science and Technology, Taylor & Francis, In press, pp.1-7. ⟨10.1080/01932691.2020.1845956⟩
- Publication Year :
- 2020
- Publisher :
- HAL CCSD, 2020.
-
Abstract
- International audience; The study of asphaltene adsorption onto nanoparticles is an area of great interest due to its ability to mitigate problems caused by asphaltenes in the oil industry. In this work, UV-vis absorbance and fluorescence spectroscopy were used to study asphaltene adsorption onto silica nanoparticles prepared from rice husk ash. The adsorption process followed a Dubinin-Radushkevich adsorption behavior, which suggested a progressive adsorption of larger aggregates onto the nanoparticles. From the Gaussian decomposition of the fluorescence emission spectra, it was determined that species of high molecular weight were preferentially adsorbed on the nanoparticles. These results have both academic and industrial importance since they help to propose more suitable thermodynamic models and methodologies to mitigate the issues related to adsorption and deposition of asphaltenes on surfaces.
- Subjects :
- fluorescence asphaltenes
Polymers and Plastics
Chemistry
Uv vis absorbance
Nanoparticle
02 engineering and technology
021001 nanoscience & nanotechnology
Photochemistry
Fluorescence spectroscopy
Surfaces, Coatings and Films
Absorbance
nanoparticle adsorption
Adsorption
020401 chemical engineering
13. Climate action
[CHIM.ANAL]Chemical Sciences/Analytical chemistry
Sio2 nanoparticles
Asphaltene adsorption
[CHIM]Chemical Sciences
0204 chemical engineering
Physical and Theoretical Chemistry
0210 nano-technology
Asphaltene
Subjects
Details
- Language :
- English
- ISSN :
- 01932691 and 15322351
- Database :
- OpenAIRE
- Journal :
- Journal of Dispersion Science and Technology, Journal of Dispersion Science and Technology, Taylor & Francis, In press, pp.1-7. ⟨10.1080/01932691.2020.1845956⟩
- Accession number :
- edsair.doi.dedup.....de322381eb883c69af0b745884c3fcc9
- Full Text :
- https://doi.org/10.1080/01932691.2020.1845956⟩