Effect of polymer matrix on the oxygen diffusion via a cobalt porphyrin fixed in a membrane

Some mechanistic insights into the action of facilitating agents on gas permeation through glassy polymeric membranes

“…Increased selectivity and decreased permeability have been seen by Chen and Lai for polycarbonate membrane and Co(SalPr) complex; whereas Ruaan et al reported increases in both selectivity and permeability for the same membrane material. Both increased selectivity and permeability have also been seen by Nishide et al and Tsuchida et al Nishide et al report selectivities as high as 12 with the use of metal porphyrins in membranes. In general, the potential of CoPc has not been explored to the same extent as metal porphyrins, although the two classes of compounds share structural similarities.…”

Polymerized Lyotropic Liquid Crystal Assemblies for Membrane Applications

“…Incorporation of carriers for the facilitated transport of a specific gas (i.e., amines for CO 2 , Co 2+ for O 2 , Ag + for olefins, etc.) is one method by which highly permeable and selective membranes can be fabricated 39–41. However, most of the reported polymers have not been utilized for industrial separations because they are often much less amenable to processing, forming thin films, or coating hollow fibers than commercial membranes with inferior gas separation properties 6.…”

Enhanced pervaporation performance of poly (dimethyl siloxane) membrane by incorporating titania microspheres with high silver ion loading

“…In facilitated transport membranes, a carrier-mediated transport of penetrant occurs simultaneously along with normal Fickian transport. The facilitated transporter is able to react specifically and reversibly with the target penetrant from its mixture and consequently enhance its permselectivity [1,2]. The local concentration of a target penetrant is fluctuated instantaneously due to the continuous reversible reaction between penetrant and facilitated transporter, which results in higher chemical potential gradient and higher flux for facilitation [3][4][5].…”

“…The local concentration of a target penetrant is fluctuated instantaneously due to the continuous reversible reaction between penetrant and facilitated transporter, which results in higher chemical potential gradient and higher flux for facilitation [3][4][5]. The polymeric membrane containing certain amount of fixed site facilitated transporter is a common sort of facilitated transport membrane, which has attracted numerous research and development interest in air separation with metalloporphyrins [2,6,7] or metal-Schiff's bases [1,[8][9][10], acidic gas (i.e. CO 2 and SO 2 ) separation with amine transporters [11], and metal ions transports for many years [12,13].…”