In-situ synthesis of an excellent CO2 capture material chabazite

In this study, a novel green strategy through fusion hydrothermal method was adopted for in-situ synthesis of chabazite. The morphological and physiochemical characteristic of the prepared adsorbent was determined by X-ray diffraction, scanning electron microscopy, and infrared spectroscopy. The characterization results revealed that prepared chabazite posses fine particles (2–5 µm) and porous structure which could be employed for capture of CO2 molecules. In order to gain an understanding of the adsorption performance of prepared adsorbent, different types of adsorption isotherms and kinetic adsorption models were studied. The results indicated that synthesized adsorbent has shown significant high CO2 adsorption capacity as well as CO2/N2 selectivity. As compare to pseudo-first-order, pseudo-second-order and Elovich model, the kinetics data of CO2 adsorption on chabazite fitted well with the Bangham model. This strategy may be a novel approach for large-scale synthesis of chabazite that exhibits excellent adsorption performance for industrial CO2 capture.

Source: Journal of the Taiwan Institute of Chemical Engineers - July 20, 2019 Category: Chemistry Source Type: research