Tape-cast asymmetric membranes for hydrogen separation. Issue 11 (1st August 2017)

• Record Type: Journal Article
• Authors: Mercadelli, Elisa; Montaleone, Daniel; Gondolini, Angela; Pinasco, Paola; Sanson, Alessandra
• Is Part Of: Ceramics international. Volume 43:Issue 11(2017)
• Page Start: 8010
• Page End: 8017
• Publication Date: 2017-08-01
• Subjects: BCZY-GDC -- Tape casting (A) -- Composites (B) -- Membranes (E); Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.03.099
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Ceramic hydrogen separation membrane is a promising technology for obtaining pure hydrogen in a wide range of processes including power generation with pre-combustion CO2 capture, water-gas shift, methane reforming, etc. This work presents for the first time the production of cer-cer asymmetrical composite membranes. BaCe0.65 Zr0.20 Y0.15 O3-δ (BCZY) supported BCZY- Gd0.2 Ce0.8 O2-δ (GDC) membranes were produced by tape casting. Three different sintering aid incorporation methods were investigated to enhance the final density of the BCZY-GDC layer. The optimization of the whole process leads to produce planar crack-free asymmetrical proton conductive membranes with Ø=12 mm, constituted by a porous 350 µm thick BCZY substrate with an open porosity of 48%, and a 20 µm thick gas tight BCZY-GDC layer.