Ma, Yi Hua
In this project electroless plating was used to deposit a dense layer of Pd on a porous stainless steel support. The thickness of a dense membrane varied between 33 and 67 m. The fluxes of H and He through the membrane were tested between 350?C and 400?C. The H flux increased when temperature and pressure were increased. H flux was also found to follow Sievert's law. The He flux decreased with increasing temperature. One membrane was also exposed to ethylene. The ethylene deposited carbon on the membrane causing both the He and H flux to decline. After the membrane was exposed to air, to remove the deposited carbon by oxidation, the H flux recovered slightly. However, the He flux increased by ten fold, due to the cracks created during the oxidation process.
Worcester Polytechnic Institute
Major Qualifying Project
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