Masierak, W. ; Emmler, T. ; Gedat, E. ; Schreiber, A. ; Findenegg, G. H. ; Buntkowsky, G. (2004)
Microcrystallization of benzene-d(6) in mesoporous silica revealed by H-2 solid-state nuclear magnetic resonance.
In: Journal of Physical Chemistry B, 108 (49)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Benzene-d(6) confined in a mesoscopically organized, controlled, porous-glass mesocellular foam (MCF), with a pore diameter of 30 nm, is studied by low-temperature solid-state H-2 nuclear magnetic resonance (H-2 NMR) spectroscopy in the temperature range of 90-180 K. The resulting spectra are compared to bulk benzene-d(6) and benzene confined in a mesoporous silica (SBA-15). The comparison shows that the spectra in the MCF are the superposition of an amorphous surface phase and a crystalline inner bulk phase. For the inner crystalline phase, the activation energies coincide with that of bulk benzene. The pore volume and the filling factor indicate that approximately three molecular layers of benzene are present on the inner surfaces.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2004 |
| Autor(en): | Masierak, W. ; Emmler, T. ; Gedat, E. ; Schreiber, A. ; Findenegg, G. H. ; Buntkowsky, G. |
| Art des Eintrags: | Bibliographie |
| Titel: | Microcrystallization of benzene-d(6) in mesoporous silica revealed by H-2 solid-state nuclear magnetic resonance |
| Sprache: | Englisch |
| Publikationsjahr: | 2004 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physical Chemistry B |
| Jahrgang/Volume einer Zeitschrift: | 108 |
| (Heft-)Nummer: | 49 |
| URL / URN: | http://apps.webofknowledge.com/full_record.do?product=WOS&se... |
| Kurzbeschreibung (Abstract): | Benzene-d(6) confined in a mesoscopically organized, controlled, porous-glass mesocellular foam (MCF), with a pore diameter of 30 nm, is studied by low-temperature solid-state H-2 nuclear magnetic resonance (H-2 NMR) spectroscopy in the temperature range of 90-180 K. The resulting spectra are compared to bulk benzene-d(6) and benzene confined in a mesoporous silica (SBA-15). The comparison shows that the spectra in the MCF are the superposition of an amorphous surface phase and a crystalline inner bulk phase. For the inner crystalline phase, the activation energies coincide with that of bulk benzene. The pore volume and the filling factor indicate that approximately three molecular layers of benzene are present on the inner surfaces. |
| Freie Schlagworte: | nmr-spectroscopy water-molecules rabbit lens dynamics diffusion surface mcm-41 h-1-nmr functionalization hexamethylbenzene |
| Zusätzliche Informationen: | 877DT Times Cited:26 Cited References Count:51 |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
| Hinterlegungsdatum: | 27 Okt 2014 20:46 |
| Letzte Änderung: | 29 Mai 2019 10:35 |
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