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provide a high surface area to enhance interactions of guest molecules with the solid surface. Adsorbents vary in structure and composition enabling them to interact differently with various types of molecules. Selection of the right type of adsorbent is critical to any adsorption process to achieve the desired separation. 2.1.1 Zeolite History A Swedish man named Baron Cronstedt first depicted zeolites in literature in the 1750’s. He proposed the name “zeolite” after heating a natural zeolite and witnessing it bubble and dance as steam released from the zeolite pores.3 Natural occurring zeolites usually contain impurities and an irregular chemical composition that limit their impact scientifically and industrially.4 Consequently, zeolites went largely unstudied for close to 200 years as they were viewed as rare minerals without a purification method. In 1905 in Germany, a synthetic zeolite with a larger capacity compared to natural zeolites was manufactured, which permitted the first commercial use of zeolites as a way to soften water. 3 Organized research into zeolites did not begin until the late 1930’s when Richard Barrer classified zeolites by their pore size. His research at Union Carbide lead to the synthesis of the first synthetic zeolites (i.e. zeolites A, X, and Y) for industrial use.3, 5, 6 Union Carbide used readily available raw materials along with a lower synthesis pressure and temperature compared to former methods to create these zeolites. The key features of synthetic zeolites compared to the natural version were a larger pore size to accommodate larger molecules, an enhanced pore volume to increase the capacity, and a higher purity of the crystalline phase.6 The ability to create a zeolite with a structure and 6PDF Image | LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION
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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
Heat Pumps CO2 ORC Heat Pump System Platform More Info
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