gasinto

Gasinto is a term used in materials science to describe the diffusion-driven uptake of gas molecules into the interior of a host material, such as porous solids, gels, or swollen polymers. It denotes gas entering the bulk or pore spaces rather than remaining only on the surface, and it is often accompanied by reversible release when conditions change. The concept overlaps with absorption and diffusion, and researchers model it with diffusion-controlled sorption frameworks.

Typical gasinto systems include metal-organic frameworks, zeolites, covalent organic frameworks, and swollen polymer networks. Uptake can occur into micropores or swollen regions, and interactions may be physical or chemical. Kinetics depend on pore connectivity, diffusion rates, and the material’s stability under swelling. Gasinto behavior is of interest for gas storage, carbon capture, and selective separations, where interior uptake can enhance capacity and selectivity compared with surface processes.

Applications span energy storage, environmental remediation, and sensing. Challenges include achieving fast, selective uptake in mixed-gas streams, maintaining reversibility over many cycles, and preserving structural integrity during repeated swelling and deswelling. Etymologically, gasinto combines gas and into, reflecting interior uptake, and the term remains unevenly standardized across literature, with some authors treating it as a subset of diffusion or absorption rather than a distinct mechanism.