Tests of Isotopic Separation Efficiency of Palladium Packed Columns

TCAP Hydrogen Isotope Separation Using Palladium and Inverse Columns

“…7). Using this method the height equivalent of theoretical plate (HETP), which is a parameter representing the length in a column to achieve one stage of equilibrium, was calculated.…”

“…We had also learned that 120 stages are required to achieve satisfactory performance of a Pd/k column in the TCAP process. 4,7 Therefore tests were conducted to confirm that this experimental Pd/k column would provide the required number of stages. Test results are compared with those reported in references 4 and 7 in Figure 4.…”

Heat and Mass Transfer Study to Understand Thermal-Cycling Absorption Process (TCAP) Scale-Up Issues

“…In 2004 tests were run on straight and coiled 2" diameter columns, but the results of the two cases were not compared at that time. 18,19 Reevaluation of the data revealed that the length per stage (same as HETP) increased by almost a factor of 2.5 for the coiled column, 4.3" vs. 1.6" for the straight column. Working with the Auburn University Center for Microfibrous Materials Manufacturing we determined that microfiber entrapped sorbents MFES made from copper microfibers and Pd/K could:…”

Radiochemistry

“…Isotope production. The efficiency of various types of palladium based chromatographic columns for the separation of tritium 15 from other hydrogen isotopes has been reviewed whilst a new two-column method has been reported for the removal of contaminants that arise in fluorine-18 from the metallic cell window 14,16 under high beam current conditions. Improved procedures for the production of both 32 P 17 and 41 Ar 18 have been discussed and a novel method has been proposed 19 for making New York University (London), 6, Bedford Square, London, UK WC1B 3RA copper-64 using the [ 64 Zn(d,2p) 64 Cu] reaction followed by ion-exchange chromatography.…”