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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(10) [October 2006] >
| Title: | Molecular diffusion and confinement effect: Neutron scattering study |
| Authors: | Mukhopadhyay, R
Mitra, S |
| Keywords: | Molecular diffusion
Neutron scattering
Zeolites
Quasi-elastic neutron scattering |
| Issue Date: | Oct-2006 |
| Publisher: | CSIR |
| IPC Code: | G21K1/00, G01N21/47 |
| Abstract: | Confined fluids generally have properties different from
those of adsorbed layer or bulk phases. Diffusion, translational or rotational,
is altered significantly on confinement. The molecular dynamics and its effect
due to confinement in various environments as studied by Quasi-elastic Neutron
Scattering (QENS) technique have been reported. QENS offers a unique
possibility of analyzing spatial dimensions of atomic or molecular processes in
their development over time. It is found that dynamics of a fluid confined in
porous medium depending on the nature of the medium and interaction, can have a
variety of modifications. The diffusivity of guest molecules embedded in
zeolite or molecular sieves depends very much on the combination of the guest
and host structures, shape and specific interactions. |
| Page(s): | 732-740 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(10) [October 2006]
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