Specific Asphaltene Aggregation in Toluene at Around 50 mg/L

被引:6
|
作者
Morimoto, Masato [1 ]
Morita, Takeshi [2 ]
Takanohashi, Toshimasa [1 ]
Nishikawa, Keiko [2 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Adv Fuel Grp, Tsukuba, Ibaraki 3058569, Japan
[2] Chiba Univ, Grad Sch Sci & Technol, Div Divers Sci, Inage Ku, Chiba 2638522, Japan
关键词
Asphaltene; Aggregation; Small-angle X-ray scattering; Synchrotron; Distance distribution function; Critical nanoaggregate concentration; X-RAY-SCATTERING; SPECTROSCOPY; FLUCTUATIONS; MODEL;
D O I
10.1627/jpi.56.58
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Asphaltene dispersed in toluene at 10-500 mg/L was analyzed using small-angle X-ray scattering (SAXS) with synchrotron radiation. The degree of fluctuation in the solutions showed a discontinuous maximum at 50 mg/L. Distance distribution function (DDF) analysis of the SAXS profiles suggested that the asphaltene formed a complex aggregated structure at 50 mg/L, whereas rodlike structures formed at 100 and 500 mg/L. The results indicate that 50 mg/L is a specific concentration on asphaltene aggregation state in toluene.
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页码:58 / 59
页数:2
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