Speciation of Silanol Groups in Precipitated Silica Nanoparticles by 1H MAS NMR Spectroscopy
โ Scribed by Hartmeyer, G.; Marichal, C.; Lebeau, B.; Rigolet, S.; Caullet, P.; Hernandez, J.
- Book ID
- 126514964
- Publisher
- American Chemical Society
- Year
- 2007
- Tongue
- English
- Weight
- 210 KB
- Volume
- 111
- Category
- Article
- ISSN
- 1932-7447
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
17 ## ลฝ . O NMR parameters C , h, d and T are reported for both Si-O-Si and Si-OH fragments within a silica gel. The Q i s o 1 ลฝ . Si-OH units have a wide spread of parameters but are typically characterised by a very short T ; 0.1 ms and C -200 1 Q kHz. These observations have extremely importan
We report results of 1 H NMR measurements of proton mobility in a-, b-, and c-polymorphs of glycine, including the energy barriers and specific correlation times for the amino group reorientation process. We discuss relations between second-order phase transition in b-glycine observed at 252 K and p