Photo by lureofadventure from unsplash
Significance Direct air capture (DAC) of CO2 from the atmosphere is being pursued to aid in mitigating global CO2 amounts and possibly reaching net negative emissions by 2050. We report… Click to show full abstract
Significance Direct air capture (DAC) of CO2 from the atmosphere is being pursued to aid in mitigating global CO2 amounts and possibly reaching net negative emissions by 2050. We report that a type of commercialized zeolite, mordenite (MOR)-type zeolite, is a promising adsorbent for DAC because of its high CO2 capacity, high selectivity, fast kinetics, low isosteric heat of adsorption, and high stability under simulated DAC conditions. We demonstrate that the primary site for CO2 adsorption in the MOR-type zeolite is located at the side-pocket and that its size (i.e., the confinement effect) is the key to the performance by comparing its adsorption behavior to those obtained from a number of other zeolites with varying pore space sizes.
Journal Title: Proceedings of the National Academy of Sciences of the United States of America
Year Published: 2022
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!