Investigation of glass transition temperatures of Turkish asphaltenes

Asphaltenes are a major concern in production operations, due to their role in conversion of vacuum residues by processes such as coking, catalytic cracking and hydroconversion. Six Turkish asphaltenes were characterized by elemental content, proton NMR, carbon NMR, GPC, DSC. Differential scanning c...

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Bibliographic Details
Published in:Fuel (Guildford) 2007-08, Vol.86 (12), p.1737-1748
Main Authors: Yasar, Muzaffer, Akmaz, Solmaz, Ali Gurkaynak, M.
Format: Article
Language:English
Subjects:
Applied sciences
Asphaltenes
Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics
Crude oil, natural gas and petroleum products
DSC
Energy
Exact sciences and technology
Fuels
Glass transition
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Summary:Asphaltenes are a major concern in production operations, due to their role in conversion of vacuum residues by processes such as coking, catalytic cracking and hydroconversion. Six Turkish asphaltenes were characterized by elemental content, proton NMR, carbon NMR, GPC, DSC. Differential scanning calorimetry (DSC) provides parameters for comparing the glass transition temperatures, endothermic behavior of asphaltene and a hypothetical melting temperature of the asphaltenes which is within the range of the pyrolysis temperature of asphaltenes. The glass transition temperatures points ( T g) of asphaltenes were determined using DSC. Hypothetical melting point temperature ( T m) of the asphaltenes was also calculated. Among all the asphaltenes tested, Bati Raman showed much higher glass transition temperatures than the others.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2006.12.022