|Title||CHARACTERIZATION OF ATHABASCA ASPHALTENES BY SMALL-ANGLE X-RAY-SCATTERING|
|Publication Type||Journal Article|
|Year of Publication||1995|
|Authors||Xu, YN, Koga, Y, Strausz, OP|
|Type of Article||Article|
|Keywords||asphaltenes, COLLOIDAL DISPERSIONS, MACROSTRUCTURE, POLYDISPERSITY ANALYSIS, SAXS, SOLVENTS|
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 Angstrom. 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.
|URL||<Go to ISI>://A1995RF97000002|