13C cross-polarization n.m.r. examination of the Glen Davis oil shale deposit

Characterization of the residual carbon

Characterization of the residual carbon in retorted oil shale by solid-state 13C n.m.r.

✍ Francis P. Miknis; Nikolaus M. Szeverenyi; Gary E. Maciel 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 682 KB

## Cross -polarization and magic-angle spinning suggest that the aromatic carbons in oil shales are largely inert to thermal processes and instead are responsible for the carbonaceous residue obtained during retorting. These results are based on 13C n m.r. measurements of the organic carbon distri