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Title: Trends and limits of CO2 capture in solid and liquid sorbents at standard conditions

Journal Article · · Journal of CO2 Utilization
 [1]; ORCiD logo [1];  [2];  [1];  [3];  [3]; ORCiD logo [1]
  1. University of Illinois Chicago, IL (United States)
  2. University of Illinois Chicago, IL (United States); SRM Institute of Science and Technology, Kattankulathur, Chennai (India)
  3. Oklahoma State University, Stillwater, OK (United States)

Carbon capture and storage (CCS) plays a critical role in achieving climate change mitigation targets, offering a pathway to decarbonize power generation, industrial processes, and heat production while addressing atmospheric CO2 removal. While CCS technologies are technically advanced, the widespread adoption of 100 % CO2 capture capacities such as 1 mol of CO2/mol of material and 1 g CO2/g storage (targeted by the DARPA, Defense Sciences Office, USA Govt.) has raised questions about the feasibility of achieving higher capture capacities. In the context of limiting global warming to 1.5°C, reaching 100 % CO2 capture capacity is increasingly necessary, with residual emissions requiring complementary carbon dioxide removal (CDR) technologies. This review exclusively focuses on the CO2 capture capacities of various sorbents under standard conditions, using different evaluation metrics. This study explores the performance of solid and liquid sorbents under standard conditions, analyzing factors including surface area, pore structure, solvent type, and functionalization to identify materials optimized for industrial-scale CCS applications. Emerging sorbents, including ILs, MOFs, COFs, POPs, DES, RCC, hybrid materials, and reactive sorbents, offer significant potential for enhanced selectivity and energy-efficient regeneration. Through a systematic assessment of gravimetric, volumetric, and molar capacities, the study provides insights into material efficiencies and trade-offs, offering guidance on optimizing sorbent selection for specific applications. The research advances understanding of scalable CCS technologies, contributing to global efforts to achieve net-zero emissions and address the pressing challenge of climate change.

Research Organization:
Oklahoma State University, Stillwater, OK (United States); University of Illinois Chicago, IL (United States)
Sponsoring Organization:
U.S. National Science Foundation – ECO-CBET program; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0022321
OSTI ID:
3021424
Journal Information:
Journal of CO2 Utilization, Journal Name: Journal of CO2 Utilization Vol. 105; ISSN 2212-9820
Publisher:
Elsevier BVCopyright Statement
Country of Publication:
United States
Language:
English

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