Asphaltene Adsorption on Functionalized Solids
Name
acs.langmuir.0c00029.pdf
Description
Published version
Size
5.28 MB
Format
Adobe PDF
Checksum (MD5)
dea24682138b183347b52e12114d3e78
Author(s)
Girard, Henri-Louis
Bourrianne, Philippe
Chen, Dayong
Cohen, Robert E
Date Issued
February 2020
Journal
Langmuir
Publisher
American Chemical Society (ACS)
Citation
Girard, Henri-Louis et al. “Asphaltene Adsorption on Functionalized Solids” Langmuir, vol. 36, no. 14, 2020, pp. 3894-3902 © 2020 The Author(s)
Version
Final published version
Abstract
Asphaltenes, heavy aromatic components of crude oil, are known to adsorb on surfaces and can lead to pipe clogging or hinder oil recovery. Because of their multicomponent structure, the details of their interactions with surfaces are complex. We investigate the effect of the physicochemical properties of the substrate on the extent and mechanism of this adsorption. Using wetting measurements, we relate the initial kinetics of deposition to the interfacial energy of the surface. We then quantify the long-term adsorption dynamics using a quartz crystal microbalance and ellipsometry. Finally, we investigate the mechanism and morphology of adsorption with force spectroscopy measurements as a function of surface chemistry. We determine different adsorption regimes differing in orientation, packing density, and initial kinetics on different substrate functionalizations. Specifically, we find that alkane substrates delay the initial monolayer formation, fluorinated surfaces exhibit fast adsorption but low bonding strength, and hydroxyl substrates lead to a different adsorption orientation and a high packing density of the asphaltene layer.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/acs.langmuir.0c00029
