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A Study of Interactions of Asphaltenes in Organic Solvents Using Surface Forces Apparatus

A Surface Forces Apparatus (SFA) was used in this study to investigate the fundamental surface forces in oil sand processing research. Asphaltene coated surfaces were chosen as the research topic due to the critical role of asphaltenes in oil sands processing, from bitumen extraction, froth treatment to tailings treatment.

To mimic the real surface state in industry processing, dip-coated asphaltene surfaces were prepared for surface force experiments. In this study, a SFA 2000 was used to determine intermolecular and surface forces of asphaltene in organic solvents (toluene and heptane). The force vs. distance curves, or so-called force profiles obtained provide valuable information on local material properties such as interaction energies, molecular conformation changes of the interacting asphaltene surfaces or films. Atomic force microscopy (AFM) was used to provide complementary information on the surface morphology of the prepared asphaltene surfaces. / Chemical Engineering

Identiferoai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:AEU.10048/1737
Date06 1900
CreatorsXie, Jinggang
ContributorsXu, Zhenghe (Chemical and Materials Engineering), Zeng, Hongbo (Chemical and Materials Engineering), Xu, Zhenghe (Chemical and Materials Engineering), Zeng, Hongbo (Chemical and Materials Engineering), Tang, Tian (Mechanical Engineering )
Source SetsLibrary and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada
LanguageEnglish
Detected LanguageEnglish
TypeThesis
Format2717134 bytes, application/pdf

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