The rotational and translational dynamics of hexamethyldisilane conΓned within silica pores of diameter 4, 6 and 20 nm were studied as a function of temperature by measuring 1H and 13C NMR linewidths, self-di β usion coefficients, spinΓspin relaxation times and spinΓlattice relaxation times, and the
NMR studies of the diffusion of cyclohexane in porous silica
β Scribed by A. Mitzithras; F.M. Coveney; J.H. Strange
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 324 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0167-7322
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π SIMILAR VOLUMES
Rotational correlation functions and rotational relaxation times of cyclohexane in porous sol-gel glass were obtained by Raman spectroscopy at temperatures ranging from 173 to 323 K. Three sets of sol-gel glass of diameters 29, 54 and 220 A were studied. The effects of physical confinement on the r
## Study of Restricted Diffusion in Porous Catalysts by NMR The diffusion of 1,3,5 tri-tert-butylbenzene (TTB) into cylindrical y-alumina extrudates of varying micropore diameter and macropore volume has been studied by NMR spectroscopy. The proton NMR signal of the methyl proton of TTB in the mic