ROKI Corporation (Headquarters: Hamamatsu City, Shizuoka Prefecture; President and CEO: Takaya Shimada) has developed a fluorine-free Metal-Organic Framework (MOF) that can directly capture low-concentration CO2 from the actual atmosphere and be regenerated at a lower temperature (80°C) than conventional methods. This technology has the potential to contribute to reducing energy consumption in Direct Air Capture (DAC) of CO2 from the air, and is expected to be applied to CO2 capture processes utilizing low-temperature heat sources such as industrial waste heat. Key Points of This Release: - Directly captures CO2 from the atmosphere (CO2 concentration: 400-500 ppm) - Concentrates captured CO2 to approximately 100%* - Fluorine-free design reduces environmental and safety compliance risks and regulatory risks - Regenerable at 80°C (lower temperature than conventional methods), enabling low-energy operation/waste heat utilization Significance of the Technology: In recent years, while interest and expectations have been growing for Direct Air Capture (DAC) technology, which efficiently captures low-concentration CO2 from the atmosphere for global warming countermeasures and carbon neutrality, the following challenges have been pointed out: - High energy cost of capture - Performance degradation in high-humidity environments - Environmental and safety compliance of materials The MOF developed this time, with its characteristic of being "regenerable at low temperatures (80°C)", is expected to enable lower energy operation than before, and has shown potential to contribute to solving these challenges. Going forward, ROKI will proceed with evaluating the application of this material to equipment and verify its deployment for CO2 capture and concentration applications. Developed Technology: In evaluations using laboratory air, the following performance was confirmed: After adsorption After desorption Outlet CO2 concentration reduced to the detection limit Captured CO2 concent