Association behavior of asphaltene in toluene by synchronous fluorescence and UV-Vis spectroscopy

PETR 140

Daoyong Yu, ydyzwm@hdpu.edu.cn1, Shuguang Zhang, Shuguang@mit.edu2, and Guohe Que1. (1) State Key Laboratory of Heavy Oil Processing, College of Chemistry & Chemical Engineering, China University of Petroleum, Dongying, Shandong 257061, China, (2) Center for Biomedical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307
It was established a method to study the association behavior of asphaltene in toluene by Synchronous fluorescence and UV-Vis spectroscopy. Chlorine e6 trisodium salt was used as a model compound, and to verify the possibility and reliability of the novel method. The association behavior of asphaltene is much more complicated than the simple Chlorin e6. There is more than one association concentration, and some asphaltene molecules begin to aggregate at very low concentration around 6 mg/L, and most of asphaltene molecules have formed aggregates above 200 mg/L. This method has been successfully used to measure the critical micelle concentrations of detergents in our laboratory, and it is promising to evaluate the effects of anti-precipitants and fouling inhibitors for asphaltene.
 

Chemistry of Petroleum and Emerging Technologies
1:30 PM-4:30 PM, Thursday, August 23, 2007 Boston Park Plaza -- White Hill Rm, Oral

Division of Petroleum Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007