Quantifying the Diffusion of a Fluid through Membranes by RemoteDetection MRI
Journal Article
·
· Journal of Physical Chemistry B
OSTI ID:928718
We present a method to measure self-diffusion acrossmembranes without the need for concentration or pressure gradients.Hyperpolarized xenon in combination with remote detection of NMR allowsthe measurement of membrane permeation, even in the gas phase. Theresulting images allow quantification of the amount of fluid diffusedthrough the membrane, and represent an alternative, potentially moreprecise way of measuring a membrane diffusion coefficient. The use ofremote detection of NMR allows for non-invasive signal encoding coupledto sensitive detection, making this approach ideal for the study ofdiffusion in intact devices such as fuel cells or separationsystems.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Basic EnergySciences
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 928718
- Report Number(s):
- LBNL-61857; R&D Project: 508901; TRN: US0803250
- Journal Information:
- Journal of Physical Chemistry B, Vol. 111, Issue 50; Related Information: Journal Publication Date: 2007
- Country of Publication:
- United States
- Language:
- English
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