Energy-Efficient and Sustainable CO2 Capture in MEA Systems Enabled by FeOOH Catalysts

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides a novel catalytic approach to reduce energy penalty in amine-based CO2 capture, relevant for researchers in carbon capture and catalysis.

🏢実務担当者:Offers a potential scalable catalyst for existing MEA systems, but further pilot-scale validation needed.

🏛政策担当者:Highlights a technology pathway to lower CCS energy costs, supporting policy incentives for CCUS deployment.

Carbon dioxide (CO2) capture is a cornerstone of global carbon neutrality, yet the high energy penalty associated with solvent regeneration—particularly for monoethanolamine (MEA) systems—remains a major barrier to its sustainable deployment. This study presents a sustainable and high-performance catalytic solution using micro-sized iron oxyhydroxide (β-FeOOH). Characterized by a high specific surface area ($287 m2/g) and a synergistic distribution of abundant Lewis and Brønsted acid sites, the β-FeOOH catalyst significantly enhances CO2 desorption kinetics. Experimental results demonstrate that the incorporation of β-FeOOH into a 30 wt% MEA solution increases the CO2 desorption rate by 10.9% while simultaneously lowering the regeneration temperature from the conventional 120 °C to 85 °C. Such a reduction in thermal requirements offers a pathway to utilize low-grade industrial waste heat, drastically improving the process’s energy efficiency. Furthermore, the catalyst exhibited remarkable cyclic stability over ten consecutive cycles, maintaining its structural integrity and catalytic activity. These findings highlight β-FeOOH as an eco-friendly, cost-effective, and robust catalyst that aligns with the principles of green chemical engineering, offering a scalable strategy to enhance the sustainability of carbon capture operations.

• semanticscholar https://doi.org/10.3390/su18073512first seen 2026-05-05 23:44:26