University of Oulu

Otto Mankinen, Julia Hollenbach, Susanna Ahola, Jörg Matysik, Ville-Veikko Telkki, Ultrafast Laplace NMR with hyperpolarized xenon gas, Microporous and Mesoporous Materials, Volume 269, 2018, Pages 75-78, ISSN 1387-1811,

Ultrafast Laplace NMR with hyperpolarized xenon gas

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Author: Mankinen, Otto1; Hollenbach, Julia2; Ahola, Susanna1;
Organizations: 1NMR Research Unit, University of Oulu, P.O. Box 3000, FIN-90014, Finland
2Institut für Analytische Chemie, Universität Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: Elsevier, 2018
Publish Date: 2019-10-16


Laplace NMR, consisting of diffusion and relaxation experiments, provides detailed information about dynamics of fluids in porous materials. Recently, we showed that two-dimensional Laplace NMR experiments can be carried out with a single scan based on spatial encoding. The method shortens the experiment time by one to three orders of magnitude, and therefore it is called ultrafast Laplace NMR. Furthermore, the single-scan approach facilitates significantly the use of nuclear spin hyperpolarization for boosting the sensitivity of the experiment, because a laborious hyperpolarization procedure does not need to be repeated. Here, we push the limits of the ultrafast Laplace NMR method by applying it, for the first time, in the investigation of a gas phase substance, namely hyperpolarized xenon gas. We show that, regardless of the fast diffusion of gas, layer-like spatial encoding is feasible, and an ultrafast diffusion — T2 relaxation correlation experiment reveals significantly different signals of free gas and gas adsorbed in a mesoporous controlled pore glass (CPG). The observed diffusion coefficients are many orders of magnitude larger than those detected earlier from liquid phase substances, emphasizing the extended application range of the method. The challenges in the methodology, caused by the fast diffusion, are also discussed.

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Series: Microporous and mesoporous materials
ISSN: 1387-1811
ISSN-E: 1873-3093
ISSN-L: 1387-1811
Volume: 269
Pages: 75 - 78
DOI: 10.1016/j.micromeso.2017.10.024
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
Funding: The financial support of Academy of Finland (grants #289649 and 294027), University of Oulu Graduate School and Emil Aaltonen Foundation is gratefully appreciated.
Academy of Finland Grant Number: 289649
Detailed Information: 289649 (Academy of Finland Funding decision)
294027 (Academy of Finland Funding decision)
Copyright information: © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license