Binderless zeolite monoliths production with sacrificial biopolymers
Loading...
Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
3D printing has emerged as an attractive way of formulating structured adsorbents, as it imparts lower manufacturing costs compared to hydraulic extrusion while also allowing for unprecedented geometric control. However, binderless structures have not been fabricated by 3D printing, as ink formulation has previously required clay binders which cannot be easily removed. In this study, we report the development of a facile approach to shape engineer binderless zeolites. 3D-printed inks comprised of 13X, 5A, ZSM-5, and experimental South African zeolites were prepared using gelatin and pectin as binding agents along with dropwise addition of various solvents. After printing, the dried monoliths were calcined to remove the biopolymers and form 100% pure zeolite structures. From N2 physisorption and CO2 adsorption measurements at 0 °C, all monoliths showed narrowing below 1 nm from their powders, which was attributed to pore malformation caused by intraparticle bridging during calcination.
Description
Keywords
Printing, Adsorption, Binderless monolith, Zeolite, Sacrificial biopolymers
Citation
Lawson, S. et al. (2021). Binderless zeolite monoliths production with sacrificial biopolymers. Chemical Engineering Journal ,407,128011