GAS SEPARATION PROCESSES

摘要

A process for the separation of a gas from a gas stream using metal organic framework that is reversibly switchable between a first conformation that allows the first gas species to be captured in the metal organic framework, and a second conformation that allows the release of the captured first gas species, using light as the switching stimulus. The metal organic framework may comprise a metal and one or more ligands, in which the ligands contain an isomerisable group within the molecular chain that forms a link between adjacent metal atoms in the metal organic framework.