EFFECT OF IMPURITIES ON THE PERFORMANCE OF A Pd-Ag DIFFUSER
A commercially fabricated diffuser purchased from Johnson-Matthey, Inc. was evaluated for performance characterization testing at the Savannah River National Laboratory (SRNL). Different impurities are often present in the feed streams of the process diffusers, but the effect of these impurities on the diffuser performance is currently unknown. Various impurities were introduced into the feed stream of the diffuser at various levels ranging from 0.5% to 10% of the total flow in order to determine the effect that these impurities have on the permeation of hydrogen through the palladium-silver membrane. The introduction of various impurities into the feed stream of the diffuser had a minimal effect on the overall permeation of hydrogen through the Pd-Ag membrane. Of the four impurities introduced into the feed stream, carbon monoxide (CO) was the only impurity that showed any evidence of causing a reduction in the amount of hydrogen permeating through the Pd-Ag membrane. The hydrogen permeation returned to its baseline level after the CO was removed from the feed stream. There were no lasting effects of the CO exposure on the ability of the membrane to effectively separate hydrogen from the non-hydrogen species in the gas stream under the conditions tested.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- DE-AC09-08SR22470
- OSTI ID:
- 1001188
- Report Number(s):
- SRNL-STI-2010-00604; TRN: US201101%%898
- Journal Information:
- Tritium 2010 Proceedings, Special Issue of Fusion Science and Technology, Journal Name: Tritium 2010 Proceedings, Special Issue of Fusion Science and Technology
- Country of Publication:
- United States
- Language:
- English
Similar Records
Johnson-Matthey diffuser characterization testing
Testing of a 7-tube palladium membrane reactor for potential use in TEP