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Structural analysis of Aleksinac oil shale kerogen by high-resolution solid-state 13C n.m.r. spectroscopy

✍ Scribed by Zoran Ẑujović; Radivoje Srejić; Dušan Vučelić; Dragomir Vitorović; Branimir Jovančićević

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
637 KB
Volume
74
Category
Article
ISSN
0016-2361

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✦ Synopsis

A sample of kerogen from Aleksinac oil shale was examined by high-resolution solid-state Iac n.m.r. spectroscopy. The presence and relative proportions of kerogen structural units were estimated using a combination of NQS and Tlpc methods with a peak-synthesis technique applied to the 13C CP-MAS spectrum. Relaxation parameters from these experiments were used to estimate differences in relative 'mobility' of various structural units. The kerogen was found to be highly aliphatic and to contain ~ 79% long-chain aliphatic plus alicyclic structures, as well as ~ 9% aromatic structures. These findings are in good agreement with the characterization of the same kerogen from its oxidation products.

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