Adsorption Isotherms of Pure Gas and Binary Mixtures of Air Compounds on Faujasite Zeolite Adsorbents: Effect of Compensation Cation

作者：Zanota Marie L; Heymans Nicolas; Gilles Frederic; Su Bao L; Frere Marc; De Weireld Guy^*

来源：Journal of Chemical and Engineering Data, 2010, 55(1): 448-458.

DOI：10.1021/je900539m

To design or Simulate air separation by a pressure swing adsorption process (PSA), adsorption equilibrium data in the range of temperatures used in this kind of process are needed. Acquisition of coadsorption equilibrium data is time-consuming, and then a binary model based on pure Substance isotherm measurements is usually used to simulate equilibrium in PSA, In this paper, adsorption equilibrium data for nitrogen and oxygen on five faujasite zeolites (NaX, NaLSX, KLSX, and two LiLSX) were obtained at (288, 303, and 318) K and at pressures Up to 3000 kPa. Coadsorption equilibria of nitrogen and oxygen mixtures were measured at 400 kPa with an original volumetric apparatus Which is able to keep a constant pressure in the measurement cell. The measurements were compared to isotherms calculated by an extended langmuir-freundlich model. The influence of compensation cation oil the adsorption capacities and seleetivities was also analyzed.

• 出版日期2010-1