Characterization of Athabasca asphaltenes by small-angle X-ray scattering

✍ Scribed by Yingnian Xu; Yoshikata Koga; Otto P. Strausz

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 503 KB
• Volume: 74
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(95)00033-2

✦ Synopsis

Colloidal dispersions of Athabasca asphaltenes in toluene were studied at room temperature by small-angle X-ray scattering (SAXS). Both 5% and 15% dispersions were found to be polydispersed spheres with the main distribution peak at a concentration-independent average radius of 33 A. The main distribution peak was skewed to the right, similar to a Schultz distribution. Owing to interparticle correlation, a small proportion of the particles could be interpreted as forming larger aggregates, the size of which appeared to decrease on increasing the concentration of dispersion.