Novel Solid Amine CO2 Sorbent with Improved Stability

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

🔬研究者:Materials scientists and CCUS researchers can evaluate SA3A's performance metrics for potential integration into DAC systems.

🏢実務担当者:Companies in carbon capture or aerospace sectors may consider SA3A for pilot projects or product development.

🏛政策担当者:Policymakers supporting carbon removal technologies may note the progress in sorbent stability, which could inform funding priorities.

Carbon dioxide removal for environmental control and life support, industrial gas processing, and direct air CO2 capture have traditionally relied on amine-based sorbents, which are prone to degradation and off-gassing of unwanted byproducts. Improving the stability of amine-based sorbents under relevant operating conditions often comes at the cost of reduced removal efficiency or capacity due to additives or chemicals that make amine sites more difficult to access or regenerate. Collins Aerospace, an RTX business, offers a legacy solid amine sorbent known as SA9T which has been used in the Amine Swingbed and Thermal Amine Scrubber flight experiments on the International Space Station, demonstrating robust temperature-vacuum swing adsorption performance in Space environments. A novel amine sorbent material was recently developed at Collins, called SA3A, leveraging many years of sorbent synthesis knowledge, laboratory test data, and operational test data on legacy amines to address challenges associated with long-term degradation while maintaining operational efficiency. SA3A is a proprietary formulation consisting of a porous polymer bead impregnated with a polyamine chemical, akin to SA9T, but the polyamine has alternate functional groups. Compared to SA9T, preliminary data indicates SA3A has equivalent or better thermal stability in air to temperature >100 °C, and competitive cyclic capacity under pressure/thermal-swing conditions with peak regeneration temperature ≥40 °C. Furthermore, cyclic stability of the sorbent has been demonstrated for over 1000 cycles and steady state off-gassing of ammonia under exposure to humid air is more than an order of magnitude less than that of SA9T in relevant conditions. Further tests are planned to evaluate SA3A as a potential candidate for various platforms.

• semanticscholar https://ttu-ir.tdl.org/bitstreams/d45337ed-085e-498d-ab63-77d00e4cbda0/downloadfirst seen 2026-08-01 06:24:31