Oregon State University researchers have filed a patent for BVR-X, a carbon capture material that keeps working in humid flue gas. The material is a metal-organic framework, a sponge-like structure with nanosized pores. In tests, BVR-X directed water and carbon dioxide to different regions of the pore, so moisture did not block the CO2 capture sites. The team ran it on a stream with 4% CO2, close to the exhaust of natural gas combustion, and the material held up over dozens of capture-and-release cycles. Industrial activities account for about 30% of U.S. greenhouse gas emissions, according to the EPA. Most carbon capture systems have to dry flue gas first, which costs energy. BVR-X appears to remove that step. The research was published in Angewandte Chemie and included partners from UC Berkeley, the University of Oregon, and the Aramco Research and Development Center. The patent is early stage. The next question is not just whether the material captures CO2 in a lab, but how it behaves in a real plant: pressure drop, degradation over time, and the energy needed to release the captured CO2. If those numbers hold, this could lower the cost of point-source capture for factories and gas plants.
