Microwave-assisted Regeneration of Liquid Sorbent-blended Silica Carbon Capture Particles

The microwave-assisted regeneration of liquid sorbent-blended silica carbon capture particles offers an innovative solution to carbon capture challenges. This hybrid powder combines a non-toxic, non-volatile ionic liquid with silica, enabling effective CO2 capture and regeneration through microwave energy. The method is more energy-efficient and environmentally friendly compared to traditional thermal heat regeneration, offering high capture efficiency, scalability, and stability in various settings. 

Description

This technology addresses the need for an energy-efficient and scalable method to capture and regenerate CO2 using microwave-assisted regeneration of hybrid silica-ionic liquid powders. Traditional carbon capture materials face limitations such as volatility, degradation, and high energy consumption during thermal regeneration. By encapsulating an ionic liquid in a hydrophobic silica coating, the hybrid powder is easier to handle and ensures high sorption kinetics, especially for carbon dioxide. The microwave-responsive material allows for regeneration with significantly less energy, minimizing material degradation and making it suitable for large-scale industrial applications.

Benefits 

• Non-volatile and stable: The ionic liquid is non-volatile and remains stable during regeneration, reducing atmospheric release or degradation. 
• Energy-efficient regeneration: Microwave-assisted heating uses less energy compared to traditional thermal methods, reducing overall costs. 
• Extended material lifespan: Reduced heating exposure during microwave regeneration limits thermal or oxidative degradation, increasing material durability. 
• Renewable energy-compatible: The system is designed to operate with renewable energy sources, further lowering carbon emissions in the process

Applications and Industries

• Direct air capture (DAC): Efficiently captures CO2 directly from the atmosphere 
• Power plants: Used in carbon capture systems at power plants, including fossil fuel-based facilities, to reduce emissions

Contact

To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.