N2, He and CO2 diffusion mechanism through nanoporus YSZ/γ-Al2O3 layers and their use in a pore-filled membranes for membrane reactors

A. Arratibel, U. Astobieta, D.A. Pacheco Tanaka, M. van Sint Annaland, F. Gallucci

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Nanoporous ceramic supports for pore filled membranes were prepared on ceramic supports (α-Al2O3) with pore size of 100 nm by adding additional layers with different proportions of YSZ/γ-Al2O3 (ranging from 50% to 90% of YSZ) by dip-coating and the effect of different parameters in the preparation method have been investigated. The diffusion mechanisms of N2, He and CO2 through the supported nanoporous layers have been studied in detail with permeation measurements at a temperature range of 50–400 °C and pressure difference of 30–100 kPa. It was observed that as the amount of γ-Al2O3 in the nanoporous layers increases, the adsorption of CO2 is favored at low temperatures and pressures. Finally, a pore-filled Pd/YSZ/γ-Al2O3 (60 wt%YSZ-40 wt. γ-Al2O3) membrane was successfully prepared and its permeation performance was tested over 900 h at 500 and 550 C, showing relatively low ideal H2/N2 perm-selectivity of about 50 due to low hydrogen flux.
Original languageEnglish
Title of host publicationPresentation at the 12th International Conference on Catalysis in Membrane Reactors (ICCMR12), 22 June 2015 to 25 June 2015, Szczecin, Poland
Publication statusPublished - 2015
Event12th International Conference on Catalysis in Membrane Reactors (ICCMR12) - Szczecin, Poland
Duration: 22 Jun 201525 Jun 2015
Conference number: 12
http://www.iccmr12.zut.edu.pl/

Conference

Conference12th International Conference on Catalysis in Membrane Reactors (ICCMR12)
Abbreviated titleICCMR 2015
CountryPoland
CitySzczecin
Period22/06/1525/06/15
Internet address

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    Arratibel, A., Astobieta, U., Pacheco Tanaka, D. A., van Sint Annaland, M., & Gallucci, F. (2015). N2, He and CO2 diffusion mechanism through nanoporus YSZ/γ-Al2O3 layers and their use in a pore-filled membranes for membrane reactors. In Presentation at the 12th International Conference on Catalysis in Membrane Reactors (ICCMR12), 22 June 2015 to 25 June 2015, Szczecin, Poland