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This Demonstration plots adsorbtion versus pressure, ... , at various temperatures for ethylene ( ... ) in NaX, known as faujasite zeolite structure (FAU). The amount adsorbed, ... (expressed in mol/kg), increases at low temperatures and high pressures. The adsorption isotherm, shown in red, is given by the following relation: ... , where ... is Henry's constant at ... , expressed in mol/(kg kPa), ... is the saturation capacity, equal to 2.9997 mol/kg, and ... , for ... =1 to 3, are the virial coefficients. If these coefficients are set equal to zero, one recovers the well-known Langmuir equation (the blue curve). The term ... is the differential enthalpy of adsorption.

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      EUN,LOM,LRE4,work-cmr-id:399069,http://demonstrations.wolfram.com:http://demonstrations.wolfram.com/AdsorptionIsothermsOfEthyleneInNaXZeoliteStructureFAU/,ilox,learning resource exchange,LRE metadata application profile,LRE

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