Tunable integration of absorption-membrane-adsorption for efficiently separating low boiling gas mixtures near normal temperature.

ABSTRACT: Separation of low boiling gas mixtures is widely concerned in process industries. Now their separations heavily rely upon energy-intensive cryogenic processes. Here, we report a pseudo-absorption process for separating low boiling gas mixtures near normal temperature. In this process, absorption-membrane-adsorption is integrated by suspending suitable porous ZIF material in suitable solvent and forming selectively permeable liquid membrane around ZIF particles. Green solvents like water and glycol were used to form ZIF-8 slurry and tune the permeability of liquid membrane surrounding ZIF-8 particles. We found glycol molecules form tighter membrane while water molecules form looser membrane because of the hydrophobicity of ZIF-8. When using mixing solvents composed of glycol and water, the

SUBMITTER: Liu H 

PROVIDER: S-EPMC4759557 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature