Ageing of interfacially active components and its effect on emulsion stability as studied by means of high voltage dielectric spectroscopy measurements

被引：29

作者：

Ese, MH

Sjoblom, J

Fordedal, H

Urdahl, O

Ronningsen, HP

机构：

[1] UNIV BERGEN,DEPT CHEM,N-5007 BERGEN,NORWAY

[2] STATOIL RES CTR,FIELD DEV TECHNOL,N-7005 TRONDHEIM,NORWAY

[3] STATOIL,PETR TECHNOL,PROD CHEM,N-4025 STAVANGER,NORWAY

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1997年 / 123卷

关键词：

dielectric spectroscopy; emulsions; interfacially active components; stability;

D O I：

10.1016/S0927-7757(97)03963-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Interfacially active components (asphaltenes and resins) have been extracted from North Sea crude oils and aged at 50 degrees C. Model water-in-oil emulsions have been stabilized by these compounds in different amounts and ratios, The stability of these emulsions has been established by means of critical electric fields measured by time domain dielectric spectroscopy in the presence of an external electric field. It is found that the stability depends mainly on the amount of asphaltenes, the degree of aging of asphaltenes and resins and the ratio between asphaltenes and resins. (C) 1997 Elsevier Science B.V.

引用

页码：225 / 232

页数：8

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