Background

Due to the current climate crisis, the US has deployed a financial incentive of $130-180 per ton of CO2 removed using direct air capture (DAC) technology. DAC is a form of CO2 removal from the air. 

There are many different methods of creating materials for DAC. Binder jetting is a 3D printing manufacturing process capable of producing parts in almost any shape and size from almost any materials. Currently, ecofriendly parts from binder jetting do not have sufficient mechanical strength to directly serve in applications. Sintering, which involves making a powdered material coalesce into a solid by heating, is often performed to strengthen the green parts. However, sintering is not applicable to materials that are sensitive to high temperatures, such as sorbents for gas separation (including carbon capture) which are extremely sensitive.

Invention Description

Researchers at Arizona State University have developed a new technology that utilizes a gaseous crosslinker (molecule) to form covalent bonds among the binder molecules, therefore resulting in a chemically bonded binder network in lieu of a physically entangled network.

Potential Applications:

• Material systems
• Binder jetting machine manufacturing
• Material manufacturer- ceramics, metals, and polymers
• Water treatment
• Catalysts
• Tooling

Benefits and Advantages:

• Stronger green parts
• Low energy consumption
• Low operational costs
• Low capital costs
• Bypasses the need for high-temperature thermal processing