𝔖 Bobbio Scriptorium
✦   LIBER   ✦

13C n.m.r. as a probe for the characterization of the low-temperature oxidation of coal

✍ Scribed by J.Anthony MacPhee; Biswanath N. Nandi

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
229 KB
Volume
60
Category
Article
ISSN
0016-2361

No coin nor oath required. For personal study only.

✦ Synopsis

that the solvent tetralin may undergo a number of reactions other than simple donation of hydrogen to produce naphthalene. Previous studies",", concerned only with the reactions of the tetralin, have not reported compounds of these types, and thus the possibility that they are derived from the coal cannot be ruled out. Experiments using labelled tetralin should enable the two pathways to be differentiated.

πŸ“œ SIMILAR VOLUMES

Characterization of coals and coal oxida
Characterization of coals and coal oxidation by magic-angle 13C n.m.r. spectroscopy
✍ John R. Havens; Jack L. Koenig; Deborah Kuehn; Carol Rhoads; Alan Davis; Paul C. πŸ“‚ Article πŸ“… 1983 πŸ› Elsevier Science 🌐 English βš– 651 KB

## Magic-angle 13C n.m.r. spectra have been obtained for a series of vitrinite concentrates. Proper modification of the cross-polarization pulse sequence allows separation of protonated and nonprotonated carbon resonances. This technique is used to determine the relative fraction of nonprotonated

New approach to the analysis of the 13C
New approach to the analysis of the 13C CP/MAS n.m.r. spectrum of coal
✍ M.L. Burgar πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 319 KB

than the initial fraction, which contains more aliphatic and hydroaromatic material. Proton n.m.r. data are consistent with these aromaticity results. ## Conclusions The initial results reported here from tests in the FDU using both coal-derived distillate and residuum show that the unit is basic