Temperature-programmed desorption analysis for aminofunctionalized zeolite nanomaterials

Abstract

In this study, Zeolite nanomaterial has been functionalized with amino functional groups using APTES (3-aminopropyltriethoxysilane) solution with 20%, 40%, 60% and 80% wt. The prepared amine zeolite has been investigated for its ability to adsorb carbon dioxide gas molecules using Temperature Programmed Desorption (TPD). Furthermore, the results of the TPD characterization show that zeolite with 60%wt APTES has a high adsorption capacity of CO2 with more than 4000 µmole/g compared with other APTES concentration where the 60%wt improved the adsorption capacity four-fold. The effective improvement in CO2 adsorption performance by amine-modified zeolite is attributed to the APTES modification reaction, which introduces additional functional groups onto the zeolite surface, thus, increasing the number of active sites available for CO2 adsorption. The TDP results show that zeolite is a promising material for CO2 adsorption. Additionally, the zeolite functionalized with 60% amino functional groups is characterized by FTIR, XRD, FESEM, EDX, XPS, and TGA.