Improving the direct air capture capacity of grafted amines via thermal treatment

Melinda L Jue; Nathan C Ellebracht; Mathew J Rasmussen; Elwin Hunter-Sellars; Maxwell A T Marple; Matthew M Yung; Simon H Pang

doi:10.1039/d4cc01634c

Improving the direct air capture capacity of grafted amines via thermal treatment

Chem Commun (Camb). 2024 Jul 4;60(55):7077-7080. doi: 10.1039/d4cc01634c.

Authors

Melinda L Jue¹, Nathan C Ellebracht¹, Mathew J Rasmussen², Elwin Hunter-Sellars¹, Maxwell A T Marple¹, Matthew M Yung², Simon H Pang¹

Affiliations

¹ Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. pang6@llnl.gov.
² Catalytic Carbon Transformation and Scale-up Center, National Renewable Energy Laboratory, Golden, CO 80401, USA.

PMID: 38895782
DOI: 10.1039/d4cc01634c

Abstract

This study investigates the effects of elevated temperature thermal treatments on the direct air capture of CO₂ by aminosilane-grafted SBA-15 silica sorbents. Exposing samples to high temperatures (200-250 °C compared to 80-120 °C) in an inert environment resulted in improved CO₂ capacity (5-21%) that was sustained over multiple adsorption/desorption cycles.