kaasasolevat
Kaasasolevat is a Finnish term describing gas solvates, i.e., inclusion compounds in which gaseous molecules are physically trapped inside a host structure without chemical reaction. The gas guest resides in cavities within a lattice or framework and is stabilized by van der Waals forces or hydrogen bonding. This concept includes clathrate hydrates—gas molecules encaged in water-based cages—as well as gas solvates formed in porous solids such as zeolites and metal–organic frameworks. Formation typically requires specific pressure and temperature conditions; clathrate formation favors elevated pressure and low temperature, while some solvates can form at ambient conditions within selective hosts.
Notable examples include methane clathrate hydrates in ocean sediments and permafrost, which store large amounts of
In research and application, kaasasolevat are explored for gas storage and transport, separations of gas mixtures,