%0 journal article
%@ 0376-7388
%A Pauls, J.R., Fritsch, D., Klassen, T., Peinemann, K.-V.

%D 2012
%J Journal of Membrane Science

%P 343-348 
%R doi:10.1016/j.memsci.2011.10.046
%T Gas permeation measurement under defined humidity via constant volume/variable pressure method
%U https://doi.org/10.1016/j.memsci.2011.10.046
 
%X Many industrial gas separations in which membrane processes are feasible entail high water vapour contents, as in CO2-separation from flue gas in carbon capture and storage (CCS), or in biogas/natural gas processing. Studying the effect of water vapour on gas permeability through polymeric membranes is essential for materials design and optimization of these membrane applications. In particular, for amine-based CO2 selective facilitated transport membranes, water vapour is necessary for carrier-complex formation (Matsuyama et al., 1996; Deng and Hägg, 2010; Liu et al., 2008; Shishatskiy et al., 2010) [1], [2], [3] and [4]. But also conventional polymeric membrane materials can vary their permeation behaviour due to water-induced swelling (Potreck, 2009) [5]. Here we describe a simple approach to gas permeability measurement in the presence of water vapour, in the form of a modified constant volume/variable pressure method (pressure increase method).