Ultrathin composite polymeric membranes for CO2/N2 separation with minimum thickness and high CO2 permeance

Benito Javier, Javier Sánchez Laínez, Beatriz Zornoza, Santiago Martín, Mariolino Carta, Carlos Téllez, Neil B. Mckeown, Joaquín Coronas, Ignacio Gascon, Richard Malpass-Evans

Research output: Contribution to journalArticlepeer-review

Abstract

The use of ultrathin films as selective layers in composite membranes offers significant advantages in gas separation for increasing productivity whilst reducing the membrane size and energy costs. In this contribution, composite membranes have been obtained by the successive deposition of ca. 1 nm thick monolayers of a polymer of intrinsic microporosity (PIM) on top of dense membranes of the ultra-permeable poly[1-(trimethylsilyl)-1-propyne] (PTMSP). The ultrathin PIM films (30 nm in thickness) demonstrate CO2 permeance up to 7 times higher than dense PIM membranes using only 0.04% of the mass of PIM without a significant decrease
in CO2/N2 selectivity.
Original languageEnglish
JournalChemsuschem
Early online date6 Sep 2017
DOIs
Publication statusE-pub ahead of print - 6 Sep 2017

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