Zeolite monoliths with hierarchical designed pore network structure: Synthesis and performance

Abstract

Structured adsorbents with attractive characteristics have been developed for use in CO2 capture applications. 5A zeolite monolithic structures with a hierarchical designed channel/pore system and high zeolite content approaching 92wt% were prepared. The body of the monoliths contained three different sizes of channels and pores; macro, meso and micro. The developed monoliths showed outstanding performance on CO2 separation from CO2/N2 gas mixtures compared to commercial 5A beads. The equilibrium isotherms of pure gas adsorption were collected, CO2/N2 binary gas breakthrough experiments were conducted, and pressure drop along beds packed with the monoliths or 5A beads was measured. The exper..