BaCe0.65Zr0.20Y0.15O3-δ - Gd0.2Ce0.8O2-δ (BCZY-GDC) is currently one of the most investigated composites as ceramic membranes for H2 separation and membrane reactors. In this context, we will present for the first time the possibility to exploit the ice-templating method coupled with screen printing to obtain hierarchicallystructured proton-conducting ceramic membranes. All the processing steps to obtain a defect free dense/porous structure were considered and analysed. In particular, the formulation of screen printing ink was optimized in terms of nature/amount of deflocculant and type of starting BCZY powder. An innovative membrane constituted by a 50 %-porous support with well-organized and aligned porosity and a 13 ± 3 μm thick dense layer on the top, was produced. The compressive strength (20.6 ± 5.6 MPa), were considered acceptable for practical applications. Promising H2 fluxes of 0.36 and 0.42 mL min1 cm− 2 at 750 ◦C, using a feed stream with 50 and 80% H2 in He (H2 %vol.) respectively, were obtained.

Gondolini, A., Bartoletti, A., Mercadelli, E., Gramazio, P., Fasolini, A., Basile, F., et al. (2023). Development and hydrogen permeation of freeze-cast ceramic membrane. JOURNAL OF MEMBRANE SCIENCE, 684, 1-10 [10.1016/j.memsci.2023.121865].

Development and hydrogen permeation of freeze-cast ceramic membrane

Gondolini, A.;Bartoletti, A.;Mercadelli, E.;Gramazio, P.;Fasolini, A.;Basile, F.;
2023

Abstract

BaCe0.65Zr0.20Y0.15O3-δ - Gd0.2Ce0.8O2-δ (BCZY-GDC) is currently one of the most investigated composites as ceramic membranes for H2 separation and membrane reactors. In this context, we will present for the first time the possibility to exploit the ice-templating method coupled with screen printing to obtain hierarchicallystructured proton-conducting ceramic membranes. All the processing steps to obtain a defect free dense/porous structure were considered and analysed. In particular, the formulation of screen printing ink was optimized in terms of nature/amount of deflocculant and type of starting BCZY powder. An innovative membrane constituted by a 50 %-porous support with well-organized and aligned porosity and a 13 ± 3 μm thick dense layer on the top, was produced. The compressive strength (20.6 ± 5.6 MPa), were considered acceptable for practical applications. Promising H2 fluxes of 0.36 and 0.42 mL min1 cm− 2 at 750 ◦C, using a feed stream with 50 and 80% H2 in He (H2 %vol.) respectively, were obtained.
2023
Gondolini, A., Bartoletti, A., Mercadelli, E., Gramazio, P., Fasolini, A., Basile, F., et al. (2023). Development and hydrogen permeation of freeze-cast ceramic membrane. JOURNAL OF MEMBRANE SCIENCE, 684, 1-10 [10.1016/j.memsci.2023.121865].
Gondolini, A.; Bartoletti, A.; Mercadelli, E.; Gramazio, P.; Fasolini, A.; Basile, F.; Sanson, A.
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0376738823005215-mmc1.pdf

Open Access dal 16/10/2024

Tipo: File Supplementare
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione - Non commerciale - Non opere derivate (CCBYNCND)
Dimensione 719.71 kB
Formato Adobe PDF
719.71 kB Adobe PDF Visualizza/Apri
Manuscript_revised.pdf

Open Access dal 16/10/2024

Tipo: Postprint
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione - Non commerciale - Non opere derivate (CCBYNCND)
Dimensione 2.01 MB
Formato Adobe PDF
2.01 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/967065
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 6
social impact