Alkane/Alkene Mixture Diffusion in Silicalite-1 Studied by MAS PFG NMR
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Microporous and Mesoporous Materials
ISSN: 1387-1811
, E-ISSN: 1873-3093
|
| Output data |
Year: 2018,
Volume: 257,
Pages: 128-134
Pages count
: 7
DOI:
10.1016/j.micromeso.2017.08.015
|
| Tags |
MFI-TYPE ZEOLITES; ELASTIC NEUTRON-SCATTERING; SELF-DIFFUSION; N-ALKANES; CRYSTALLINE MATERIALS; LOADING DEPENDENCE; DIFFUSIVITIES; SIMULATIONS; DYNAMICS; TRANSPORT |
| Authors |
Dvoyashkina Nina
1
,
Freude Dieter
1
,
Stepanov Alexander G.
2,3
,
Böhlmann Winfried
1
,
Krishna Rajamani
4
,
Karger Jörg
1
,
Haase Jürgen
1
|
| Affiliations |
| 1 |
Faculty for Physics and Earth Sciences, Leipzig University, Linnestr. 5, 04103 Leipzig, Germany
|
| 2 |
Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk, 630090, Russia
|
| 3 |
Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090, Russia
|
| 4 |
Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098, XH Amsterdam, The Netherlands
|
|
Funding (3)
|
1
|
German Research Foundation
|
HA 1893/16
|
|
2
|
Federal Agency for Scientific Organizations
|
0303-2016-0003
|
|
3
|
German Research Foundation
|
Avance 750
|
The diffusivity of n-alkanes and n-alkenes (C2 to C6) and their mixtures in silicalite-1 was studied by magic-angle spinning pulsed field-gradient nuclear magnetic resonance (MAS PFG NMR) at the temperatures of 273 K, 313 K and 373 K. It could be proved that there is no significant difference between the diffusivities of alkanes, alkenes and their mixtures for equal carbon numbers and equal total loading. The diffusivities of the alkanes, alkenes and their mixtures are found to monotonically decrease with increasing carbon number, in agreement with the results obtained in MD simulations with n-alkanes in silicalite-1.