Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6638528 | Fuel | 2014 | 8 Pages |
Abstract
Chemical changes in the structure of kerogen during simulated thermal maturation were investigated by solid-state 13С NMR spectroscopy. The spin counting technique was used to evaluate the share of “observable” carbon atoms with increasing hydrous pyrolysis temperature. The obtained one-dimensional CP-MAS spectra showed that up to 50% of ether bonds were destroyed during the initial stages of sample heating. In spite of the loss of a significant part of alkyl chains, kerogen remained aliphatic. The aromatic structure of kerogen underwent considerable changes: two-dimensional 1H-13C heteronuclear solid-state NMR (HETCOR) spectra showed that in the process of hydrous pyrolysis, the redistribution of carbon atoms took place - branched aromatic carbons transform into bridgehead aromatic carbons.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
N. Burdelnaya, D. Bushnev, M. Mokeev, A. Dobrodumov,