Oregon State University chemists have filed a patent application on a carbon capture sorbent, BVR-X, that removed CO2 from a 4% gas mixture in laboratory tests and held performance across dozens of capture-release cycles, according to a study published in Angewandte Chemie.

The 4% CO2 concentration mirrors exhaust from natural gas combustion, a stream that frustrates conventional porous sorbents because water vapor blocks the active sites where CO2 binds.

How does BVR-X differ from existing sorbents?

Most moisture-sensitive capture materials lose capacity when humidity rises, forcing operators to dry the flue gas before treatment. Drying exhaust adds costs that can make carbon capture impractical for industrial facilities, a limitation the Oregon State team set out to address.

BVR-X routes water and CO2 into separate zones within its tiny pores, letting the sorbent continue collecting CO2 under humid conditions rather than treating water as a contaminant.

"BVR-X changes when exposed to water, helping it continue collecting carbon dioxide under humid conditions," said Kyriakos Stylianou, an Oregon State chemistry professor and study author.

The material also kept working through dozens of regeneration cycles without measurable performance loss, the researchers reported. That reusability is a key metric for any sorbent targeting continuous industrial service rather than single-pass laboratory use.

What stream is the technology aimed at?

The 4% CO2 test condition reflects post-combustion capture from natural gas combustion, where flue gas humidity sits far above the dry-air benchmarks most sorbents are screened against. Stylianou identified natural gas exhaust as the target application in comments accompanying the study.

The team did not publish a sorbent cost, a CO2 capacity per kilogram of material, or a regeneration energy figure — the operating metrics an engineering contractor would need to size a commercial skid or a retrofit unit for an existing boiler.

Who is behind the work?

The study lists researchers from four institutions:

• Oregon State University
• University of California, Berkeley
• University of Oregon
• Aramco Research and Development Center

Three funding sources underwrote the research: Saudi Aramco, the Murdock Charitable Trust, and a donor-advised fund established by Brian and Marilyn Kleiner through the OSU Foundation.

Aramco's involvement ties the project to a producer operating some of the world's largest gas processing assets, where humid CO2 separation remains an open engineering problem at scale. That connection is likely to shape which commercialization pathways the university explores.

What happens next?

The patent application is the first gating step. A granted U.S. patent would let Oregon State license BVR-X to a sorbent manufacturer or process licensor; until that issuance, scale-up work remains confined to the laboratory.

Oregon State has not announced a commercialization partner, and no bench-scale or slipstream test at a refinery, gas plant, or power station has been disclosed. The next milestone to watch is the outcome of Oregon State's patent application and any subsequent licensing deal that moves BVR-X from a 4% CO2 laboratory tube to a humid industrial flue duct.