Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Membrane gas diffusion measurements with MRI.

Ziheng Zhang1, Alexei V Ouriadov, Chris Willson

  • 1MRI Centre, Department of Physics, University of New Brunswick, Fredericton, NB, Canada E3B 5A3.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|August 2, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

EphB4 inhibition defines a druggable synthetic-lethal vulnerability in MYC-driven triple-negative breast cancer.

Cell death & disease·2026
Same author

Surface BO<sub>3</sub> Configuration in Li-Rich Cathode Materials Enabling Highly-Stable Anionic Redox Reactions.

Angewandte Chemie (International ed. in English)·2026
Same author

Reliability assessment of key equipment for coal gasification using artificial intelligence technology.

PloS one·2026
Same author

Experimental and numerical investigations on the transport mechanisms of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene under variable flow and solution chemistry.

Journal of hazardous materials·2026
Same author

Spin-echo measurements for capillary rheometry at low field.

Magnetic resonance letters·2026
Same author

Enabling Sodium-Ion Batteries Over 180 Wh/kg via Organic-Salt-Driven Sodium Replenishment.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Localization-driven exchange contrast in diffusion exchange spectroscopy.

Journal of magnetic resonance (San Diego, Calif. : 1997)·2026
Same journal

4.5 Tesla superconducting miniature magnet in liquid nitrogen.

Journal of magnetic resonance (San Diego, Calif. : 1997)·2026
Same journal

Folding and unfolding dynamics of a DNA aptamer studied by heteronuclear <sup>1</sup>H-<sup>13</sup>C correlation zz-exchange spectroscopy.

Journal of magnetic resonance (San Diego, Calif. : 1997)·2026
Same journal

Multi-spin control from one-spin pulses.

Journal of magnetic resonance (San Diego, Calif. : 1997)·2026
Same journal

Altering MRI rotating frame relaxations by changing the truncation level of Hyperbolic Secant pulse.

Journal of magnetic resonance (San Diego, Calif. : 1997)·2026
Same journal

Effects of proton exchange on the lifetimes of long-lived states in aliphatic chains.

Journal of magnetic resonance (San Diego, Calif. : 1997)·2026
See all related articles

A new magnetic resonance imaging (MRI) method accurately measures gas diffusion in membranes. This technique overcomes challenges for gases like hydrogen, enabling faster material analysis for separation technologies.

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Physics

Background:

  • Accurate measurement of gas transport properties in polymeric membranes is crucial for developing advanced filtering and separation technologies.
  • Understanding membrane material behavior requires precise determination of gas diffusion coefficients.

Purpose of the Study:

  • To develop and validate a novel magnetic resonance imaging (MRI) methodology for measuring gas phase diffusion coefficients in polymeric membranes.
  • To overcome existing MRI challenges associated with low spin density and short relaxation times, particularly for hydrogen gas.

Main Methods:

  • A modified one-dimensional, single-point ramped imaging with T(1) enhancement (1D-SPIR) MRI technique was employed.
  • A modified one-dimensional diaphragm cell apparatus was utilized for rapid diffusion coefficient measurements (<1 min).

Related Experiment Videos

  • Diffusion coefficients for hydrogen (H(2)) and sulfur hexafluoride (SF(6)) were measured in a model polymeric membrane.

    • Main Results:

    • The developed MRI method successfully measured gas diffusion coefficients, overcoming technical challenges.
    • The measured diffusion coefficient for H(2) gas in the model membrane was 0.54 ± 0.01 mm(2)/s.
    • The measured diffusion coefficient for SF(6) gas in the model membrane was 0.14 ± 0.01 mm(2)/s at ambient conditions.

    Conclusions:

    • The novel MRI methodology provides an accurate and efficient means to determine gas diffusion coefficients in polymeric membranes.
    • This technique is valuable for characterizing membrane materials used in gas separation applications, such as those in metal hydride batteries.
    • The rapid measurement capability (<1 min) facilitates faster material screening and process optimization.