A method of capturing water from a gaseous composition comprising water vapour (e.g., air), the method comprising:
(a) providing a metal-organic material; and
(b) contacting the metal-organic material with water and/or water vapour;
wherein upon contact with water and/or water vapour the material switches from a first state to a second state wherein the second state is able to retain a higher amount of water than the first state.
A method of capturing water from air, the method comprising:
(a) providing a two-dimensional layered material; and
(b) contacting the material with water and/or water vapour;
wherein upon contact with water and/or water vapour the material switches from a first state to a second state wherein the second state is able to retain a higher amount of water than the first state.
A method of purifying gaseous mixtures, for example ternary or quaternary gaseous mixtures, using a sorbent media comprising two or more sorbent materials. The method involves obtaining a target gas from a gaseous composition comprising the target gas, a first gas and a second gas, and optionally further gases by contacting the gaseous composition with the sorbent media to remove at least some of the first gas and at least some of the second gas from the gaseous composition. The sorbent media comprises at least a first sorbent material and a second sorbent material; wherein the first sorbent material has a higher adsorption selectivity for the first gas than for the target gas; and wherein the second sorbent material has a higher adsorption selectivity for the second gas than for target gas. The method may be particularly useful for the separation of pure ethylene, methane or propylene from such gaseous mixtures. A sorbent media and an apparatus for obtaining a target gas from such a gaseous composition are also disclosed.
A porous chiral material of formula [M(L)1.5(A)]+X− wherein M is a metal ion; L is a nitrogen-containing bidentate ligand; A is the anion of mandelic acid or a related acid; and X− is an anion.
一种式为[M(L)1.5(A)]+X-的多孔手性材料,其中 M 是金属离子;L 是含氮双齿配体;A 是扁桃酸或相关酸的阴离子;X- 是阴离子。