Concerning retene, petrolene and asphaltene
نویسندگان
چکیده
منابع مشابه
Sensitivity of Asphaltene Properties to Separation Techniques
Energy & Fuels is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Article Sensitivity of Asphaltene Properties to Separation Techniques H. Alboudwarej, J. Beck, W. Y. Svrcek, H. W. Yarranton, and K. Akbarzadeh Energy Fuels, 2002, 16 (2), 462-469• DOI: 10.1021/ef010213p • Publication Date (Web): 06 February 2002 Downloaded from http://pubs.acs.org on ...
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Retene, dehydroabietin, and 1,2,3,4-tetrahydroretene have been identi®ed by GC±MS in extractable aromatic hydrocarbon fractions produced by pyrolysis at 200 and 300 C of pure strains of the green alga Chlorella protothecoides and the cyanobacterium Synechocystis sp. The results suggest phytoplankton as a possible source of retene in Recent and ancient sediments. # 2000 Elsevier Science Ltd. All...
متن کاملMolecular-Thermodynamic Framework for Asphaltene-Oil Equilibria
Asphaltene precipitation is a perennial problem in producing and rejming crude oils. To avoid precipitation, it is usefid to know the solubility of asphaltenes in petroleum liquids as a function of temperature, pressure and liquid-phase composition In the novel molecular-thermodynamic flamework presented here, both asphaltenes and resins are represented by pseudo-pure components while all other...
متن کاملAsphaltene Precipitation in Crude Oils: Theory and Experiments
The precipitation of asphaltenes in two Mexican crude oils was measured using a combination of high-pressure isothermal expansion and atmospheric titration with nalkanes. Experiments were carried out from the liveand tank-oil type of samples of the same crude oils. For the oils investigated, compositional data, precipitation phase diagrams, and bubble point pressures are reported. A theoretical...
متن کاملEffect of dispersant on asphaltene suspension dynamics: aggregation and sedimentation.
When oil is mixed with light alkanes, asphaltenes can precipitate out of oil solutions in a multistep process that involves the formation of nano and colloidal scale particles, the aggregation of asphaltene colloids, and their eventual sedimentation. Amphiphilic dispersants can greatly affect this process. The mechanism of the dispersant action in colloidal asphaltene suspensions in heptane has...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1901
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(01)90175-9