Development of Structured Zeolite Adsorbents and Assessment of their Gas Separation Performance

Fateme Rezaei

Missouri University of Science & Technology

Additive manufacturing, also known as 3D printing, has emerged as an invaluable platform for shape engineering porous solids and fabricating scalable configurations for use in a wide variety of separation and reaction applications. However, formulating porous materials into self-standing configurations can dramatically affect their performance and consequently the efficiency of the process wherein they operate. Over the past few years, we have successfully developed new approaches such as direct ink printing, secondary growth seeding, polymer phase separation, or binderless printing, to shape engineer zeolite materials and reported proof-of-concept demonstration of their gas separation performance. In particular, we have systematically assessed the interplay between scaffolds printing conditions such as ink composition and rheological properties, and printed pieces properties such as porosity, cell density, and mass transfer characteristics. We also investigated how such relationships impact separation performance of the printed zeolite adsorbents from the perspectives of both equilibrium and dynamic adsorption behavior. Our results provide a fresh insight on formulation-structure-property relationships in 3D-printed zeolite structures and their performance in gas separation processes.