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3.2 Adsorbents and bed properties Table 5.5 – LDF coefficients and heat of adsorption for the Langmuir-Freundlich isotherm validation Activated Carbon H2 0.700 CH4 0.195 CO 0.150 N2 0.261 CO2 0.036 Zeolite 2880 4290 4300 1660 5240 Pressure Swing Adsorption for Hydrogen Purification Components LDF factor 𝜔𝑖,(𝑠−1) Heat of Adsorption ∆𝐻𝑖 (J/mol) H2 0.700 2800 CH4 0.147 5400 CO 0.063 5300 N2 0.099 5470 CO2 0.014 9330 Table 5.6 – Adsorbent properties employed in the Langmuir-Freundlich isotherm validation Adsorbent Activated carbon Zeolite Average pellet size, Rp (m) Pellet density (kg/m3) Heat capacity ( 𝐽 ) 𝑘𝑔∙𝐾 Particle porosity Bed density (kg/m3) 1.15 × 10−3 850 1045 0.61 482 1.57 × 10−3 1160 919.6 0.65 746 Langmuir-Freudlich Isotherm 57PDF Image | PRESSURE SWING ADSORPTION FOR THE PURIFICATION OF HYDROGEN
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