Molecular structure of bituminous coal studied with pulse nuclear magnetic resonance
✍ Scribed by Antoni Jurkiewicz; Anna Marzec; Narcyz Piślewski
- Book ID
- 107755699
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 448 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0016-2361
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The effects of imbibed pyridine on the molecular structure of a high-volatile bituminous vitrinite have been studied at room temperature by proton nuclear magnetic resonance pulse techniques. Both the free induction decay and nominal solid echo signals, recorded before and after addition of fully-de
## Abstract Pulsed NMR spectra of protons in polysilastyrene, $ \rlap{--} [{\rm Si(CH}\_{\rm 3} {\rm )}\_{\rm 2} {\rm Si(CH}\_{\rm 3} )({\rm C}\_6 {\rm H}\_5 )\rlap{--} ]\_n $, with __n__ ≈ 60, have been measured in the temperature range 80–450 K. The linewidth is constant at 7.4 G up to 200 K an