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thermally induced mobility, moving from beta cage - hexagonal prism locations to the beta cage. Silver clusters in this latter position enhanced nitrogen adsorption due to increased exposure of the Ag-cation in the site II* location, which is less shielded by framework oxygen atoms than that at all other cation sites. Ag+ at site II* hence has stronger interactions (including weak -complexation) with N2 in the supercage. In Chapter Two, we studied the air separation performance of mixed AgLiX zeolite. The addition of very small amounts of Ag and the proper dehydration conditions resulted in the formation of silver clusters and enhanced adsorptive characteristics and increased energetic heterogeneity as compared to those of the near fully exchanged Li+- zeolites. The performance for air separation by the best of these sorbents, containing, on average, only one Ag per unit cell, was compared to that of the near fully Li+-exchanged zeolite using a standard PSA cycle by numerical simulation. The results show that the new sorbent provides a significantly higher (>10%) product throughput, at the same product purity and recovery, when compared to that of the near fully Li+-exchanged zeolite. In Chapter 3, we report the structural effects on adsorption of atmospheric gases in mixed Li,Ag- X zeolite. Neutron diffraction and Reitveld refinement analysis were used to determine the zeolite structure and the cation sites. These were correlated with the adsorption properties. In Chapter 4, the effects of residual water on the adsorption of atmospheric gases in Li-X zeolite were determined. In addition, a Monte Calro simulation study was performed. The residual water has a very strong effect in decreasing the adsorption of nitrogen and oxygen. The effects were iluustrated well by Lonte Carlo results. 5PDF Image | PSA USING SUPERIOR ADSORBENTS
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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