Influence of Strongly and Weakly Interfacially Active Asphaltene Particles on Solubility and Crystallizability of Octacosane (C₂₈) Model Oils.

ABSTRACT: Asphaltenes and waxes are two components of crude oil that contribute to flow assurance challenges; however, the interaction between them is rarely studied. This study investigates how asphaltene particles with different physicochemical properties, specifically, remaining asphaltenes (RA) and interfacially active asphaltenes (IAA), influence the crystallization kinetics of C₂₈H₅₈, a model wax compound. IAA fractions are more polar, primarily due to their higher content of heteroatoms such as sulfur and oxygen, and they tend to form larger particles in solution compared to the RA fraction. At a fixed C₂₈-to-asphaltene ratio of 1000:1 (w/w), the introduction of either RA or IAA, especially at low concentrations (10 g/L C₂₈ + 0.01 g/L asphaltene), s

SUBMITTER: Ali A 

PROVIDER: S-EPMC12593340 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature