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Citation: LI Chuan, CUI Min, WANG Ji-Qian, SHI Bin, QUE Guo-He. Effects of Surfactants on Dispersion Characteristics of Residue Asphaltene[J]. Chinese Journal of Applied Chemistry, ;2008, 25(1): 85-89. shu

Effects of Surfactants on Dispersion Characteristics of Residue Asphaltene

LI Chuan ^a,, ,
CUI Min ^b ,
WANG Ji-Qian ^a ,
SHI Bin ^a ,
QUE Guo-He ^a

1.
a State Key Laboratory of Heavy Oil;
2.
b College of Chemistry & Chemical Engineering, China University of Petroleum, Dongying 257061

Corresponding author: LI Chuan,
Received Date: 7 February 2007
Available Online: 4 May 2007
Fund Project: 中国石油大学(华东)研究生创新基金项目(b2006-10) (华东)研究生创新基金项目(b2006-10)

The effects of sodium dodecyl sulfonate(SDS),cetyltrimethyl ammonium bromide(CTAB),oleic acid(OA) and coconut amine(CA) on the dispersion characteristics of asphaltene in the Lungu atmospheric residue(LGAR)-toluene solution were investigated by rheological parameter method.It showed that with surfactants,asphaltene in the LGAR-toluene solution was hydrodynamically spherical and exhibited an obvious solvation phenomenon.Surfactants can accelerate the solvation of the asphaltene,and increase the scrambling of asphaltene particles.The ability of the surfactants promoting the solvation of the asphaltene was in the order of CA> OA> SDS> CTAB.SDS,OA and CA can deaggregate asphaltene,and the ability of the surfactants deaggregating the asphaltene was in the order of CA> OA> SDS,while CTAB can accelerate the aggregation of the asphaltene.
- residue,
- surfactant,
- rheological parameters method,
- asphaltene,
- dispersion characteristics
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