High temperature/pressure MAS-NMR for the study of dynamic processes in mixed phase systems.
Journal
Magnetic resonance imaging
ISSN: 1873-5894
Titre abrégé: Magn Reson Imaging
Pays: Netherlands
ID NLM: 8214883
Informations de publication
Date de publication:
02 2019
02 2019
Historique:
received:
29
08
2018
accepted:
24
09
2018
pubmed:
30
11
2018
medline:
6
6
2019
entrez:
29
11
2018
Statut:
ppublish
Résumé
A new MAS-NMR rotor (the WHiMS rotor) has been developed which can reach pressures of 400 bar at 20 °C or 225 bar at 250 °C. These rotors are ideal for mixed phase systems such as a reaction using a solid catalyst with a liquid/supercritical solvent topped with high pressure gas in the head space. After solid and liquid portions of the sample are loaded, the rotor is capped with an o-ring equipped polymer bushing that snaps into a mating groove in the rotor. The bushings incorporate a check valve into the sealing mechanism which allows for pressurization without mechanical manipulation - they will allow gas to flow in but not out. This WHiMS rotor design has enabled experiments on a wide variety of biotic and abiotic mixed-phase systems. Geochemical systems have also been studied, for example, adsorption and confinement studies of supercritical methane/CO
Identifiants
pubmed: 30482639
pii: S0730-725X(18)30425-9
doi: 10.1016/j.mri.2018.09.026
pii:
doi:
Substances chimiques
Carbon Dioxide
142M471B3J
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
37-44Informations de copyright
Copyright © 2018 The Authors. Published by Elsevier Inc. All rights reserved.