LTA/Poly(1-trimethylsilyl-1-propyne) mixed-matrix membranes for high-temperature CO2/N2 separation

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URI: http://hdl.handle.net/10902/9915
ISSN: 0930-7516
ISSN: 1521-4125
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Autoría
Fernández Barquín, AnaAutoridad Unican; Casado Coterillo, ClaraAutoridad Unican; Palomino Roca, Miguel; Valencia Valencia, Susana; Irabien Gulías, ÁngelAutoridad Unican
Fecha
2015-04
Derechos
© Wiley-VCH Verlag. This is the peer reviewed version of the following article: Fernández-Barquín, A., Casado-Coterillo, C., Palomino, M., Valencia, S. and Irabien, A. (2015), LTA/Poly(1-trimethylsilyl-1-propyne) Mixed-Matrix Membranes for High-Temperatur(4)e CO2/N2 Separation. Chem. Eng. Technol., 38(4): 658–666, which has been published in final form at http://dx.doi.org/10.1002/ceat.201400641. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
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Chemical Engineering and Technology, 2015, 38(4), 658–666
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Wiley-VCH Verlag
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Palabras clave
Gas separation
Mixed-matrix membranes
Poly (1-trimethylsilyl-1-propyne)
Thermal stability
LTA
Resumen/Abstract
Mixed-matrix membranes (MMM) consisting of poly(1-trimethylsilyl-1-propyne) (PTMSP) as continuous matrix and small-pore LTA-framework zeolites with Si/Al ratios from 1 (commercial zeolite A) to ¥ (ITQ-29) as dispersed phase were prepared by solution casting. The thermal stability of the MMM is as high as that of glassy PTMSP polymer, whose high permeability is maintained even at increasing temperature. The effect of the Si/Al ratio in the zeolite fillers on the membrane performance is observed by the increasing CO2/N2 permselectivity of low-Si/Al ratio zeolite A-based membranes, in comparison with pure silica ITQ-29. The performance of the LTA-type zeolite-PTMSP MMM was adjusted to the modified Maxwell model by estimating the chain immobilization factor and the interphase thickness as a function of temperature, Si/Al ratio, and zeolite loading.
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