Issue 15/2020 - New membrane material with excellent CO2 capture properties

Recently, the atmospheric environment and bioenergy team of Tianjin University has made significant progress in "membrane separation method for carbon dioxide capture", and successfully developed a new hybrid matrix membrane preparation technology, which prepares membrane materials with excellent carbon dioxide capture performance
.

The atmospheric environment and bioenergy team of the School of Environment of Tianjin University has innovated its ideas and broken the conventional practice
of using water and ethanol as solvents for polyether block polyamide membrane materials.
They repeated experiments to explore the effects of
different solvents on the membrane gas separation performance.
The experimental results show that using N-methylpyrrolidone as the preparation solvent can produce more uniform distribution of carbon nanotubes in the generated membrane material and "more breathable", which effectively improves the gas separation efficiency and rate
of the membrane material.
The carbon dioxide separation performance of the mixed matrix membrane prepared by this new technology is close to the theoretical separation upper limit
of such membrane materials.
Li Run, a member of Tianjin University's atmospheric environment and bioenergy team, said, "We hope that this technology can provide strong support for the treatment of flue gas in future coal-fired power plants and chemical enterprises, and play a significant role
in controlling greenhouse gas emissions.
" ”