Title of article :
Molecular model of Estonian kukersite kerogen evaluated by 13C MAS NMR spectra☆
Author/Authors :
Lille، نويسنده , , ـ and Heinmaa، نويسنده , , I and Pehk، نويسنده , , T، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
6
From page :
799
To page :
804
Abstract :
The chemical structure of Estonian kukersite kerogen is evaluated using a simulation of 13C MAS NMR spectrum. A reasonable fit to the experimental NMR spectrum is obtained by assuming a model of the geomacromolecule with empirical formula C421H638O44S4NCl and a set of structural elements comprising mainly alkylated phenolic structures particularly alkyl-1,3-benzenediols and condensed alicyclic rings. From the presented model new views are coming up on the carbon skeleton of kerogen and constraints on the phenol formation pathways in the retorting process, i.e. up to 80% of methylene groups in kerogen are located in aliphatic chains and the complicated mixture of phenols in the retort oil seems to result mainly from the thermal conversion of alkyl-1,3-benzenediol units originally present in kerogen.
Keywords :
Kerogen , 13C MAS NMR spectroscopy , molecular modeling
Journal title :
Fuel
Serial Year :
2003
Journal title :
Fuel
Record number :
1463085
Link To Document :
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