Abstract
The CO 2 adsorption equilibria of the honeycomb zeolite beds consisting of MS-13X or MS-4A were determined from breakthrough curves for various CO 2–N 2 mixtures, and the fitness of the Dubinin–Astakhov equation (Dubinin MM, Astakhov VA. Description of adsorption equilibria of vapors on zeolite over wide ranges of temperature and pressure. In: Flanigen M, Sand LB, editors. Molecular sieves zeolite II. Washington: American Chemical Society, 1971) to the obtained data was examined. The Langmuir approximation to the Dubinin–Astakhov equation was also proposed and its validity was discussed. It is found that the CO 2 adsorption equilibria of the examined honeycomb zeolite beds well correlate with the Dubinin–Astakhov equation and that the evaluated Langmuir parameters can be represented by an exponential function of the temperature.
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