Proton dynamic polarization and proton-carbon cross-polarization in coal
β Scribed by Robert A. Wind; Jan Trommel; Jaap Smidt
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 293 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Hartmann-Hahn inversion-recovery cross-polarization magic-angle spinning experiments were performed for all types of protonated carbons with n = 1, 2 and 3). The resulting non-exponential decays were analyzed using (CH n both a simple memory function approach and density matrix calculations. Althoug
It is demonstrated that inversion-recovery cross polarization methods may be successfully employed to detect non-protonated resonances in high-resolution solid-state NMR. By incorporating a short inverse polarization ttme ( zz I50 us) after the normal cross polarization period, the resonances of car