Effect of desorption temperature on CO2 adsorption equilibria of the honeycomb zeolite beds

The behaviours of MS-13X and MS-4A were examined. The fitness of the Dubinin–Astakhov equation to the adsorption equilibria of the fully-desorbed honeycomb beds was examined. The validity of the Langmuir approximation to the obtained adsorption equilibria for relatively low CO2 partial pressures was also discussed. The CO2 adsorption equilibria of the honeycomb zeolite beds are not affected by itʹs desorption temperature, as long as the examined honeycomb beds are desorbed at a temperature greater than 250 °C, and are well correlated with the Dubinin–Astakhov equation, irrespective of adsorption temperature. The Langmuir approximation works well for CO2 partial pressures less than about 0.2 bar, but the accuracy of the approximation deteriorates as the adsorption temperature increases.