Monitoring Xenon Capture in a Metal Organic Framework Using Laser-Induced Breakdown Spectroscopy

Andrews, Hunter B.; Thallapally, Praveen K.; Robinson, Alexander J.

doi:10.3390/mi14010082

Monitoring Xenon Capture in a Metal Organic Framework Using Laser-Induced Breakdown Spectroscopy

Journal Article · Thu Dec 29 00:00:00 EST 2022 · Micromachines

DOI:https://doi.org/10.3390/mi14010082· OSTI ID:1908055

^[1]; ^[2]; Robinson, Alexander J. ^[2]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Molten salt reactor operation will necessitate circulation of a cover gas to remove certain evolved fission products and maintain an inert atmosphere. The cover gas leaving the reactor core is expected to contain both noble and non-noble gases, aerosols, volatile species, tritium, and radionuclides and their daughters. To remove these radioactive gases, it is necessary to develop a robust off-gas system, along with novel sensors to monitor the gas stream and the treatment system performance. In this study, a metal organic framework (MOF) was engineered for the capture of Xe, a major contributor to the off-gas source term. The engineered MOF column was tested with a laser-induced breakdown spectroscopy (LIBS) sensor for noble gas monitoring. The LIBS sensor was used to monitor breakthrough tests with various Xe, Kr, and Ar mixtures to determine the Xe selectivity of the MOF column. This study offers an initial demonstration of the feasibility of monitoring off-gas treatment systems using a LIBS sensor to aid in the development of new capture systems for molten salt reactors.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC05-00OR22725; AC05-76RL01830

OSTI ID:: 1908055

Alternate ID(s):: OSTI ID: 1924528

Report Number(s):: PNNL-SA-180335

Journal Information:: Micromachines, Journal Name: Micromachines Journal Issue: 1 Vol. 14; ISSN 2072-666X

Publisher:: MDPICopyright Statement

Country of Publication:: United States

Language:: English

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47 OTHER INSTRUMENTATION
Krypton
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fission gases
laser-induced breakdown spectroscopy
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noble gases
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Monitoring Xenon Capture in a Metal Organic Framework Using Laser-Induced Breakdown Spectroscopy

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