3D microextrusion of eco-friendly water based cer-cer composite pastes for hydrogen separation
Andrea Bartoletti,
Alex Sangiorgi,
Elisa Mercadelli,
Cesare Melandri,
Angela Gondolini,
Sandra García-González,
Laia Ortiz-Membrado,
Miguel Morales,
Emilio Jimenez-Pique,
Alessandra Sanson
Affiliations
Andrea Bartoletti
Institute of Science, Technology and Sustainability for Ceramics (ISSMC) of the National Research Council (CNR), Via Granarolo 64, I-48018, Faenza, RA, Italy; Department of Chemical Sciences, Università degli Studi di Padova, Via Marzolo 1, 35131, Padova, Italy; Corresponding author. Via Granarolo, 64, 48018, Faenza, RA, Italy.
Alex Sangiorgi
Institute of Science, Technology and Sustainability for Ceramics (ISSMC) of the National Research Council (CNR), Via Granarolo 64, I-48018, Faenza, RA, Italy; Corresponding author. Via Granarolo, 64, 48018, Faenza, RA, Italy.
Elisa Mercadelli
Institute of Science, Technology and Sustainability for Ceramics (ISSMC) of the National Research Council (CNR), Via Granarolo 64, I-48018, Faenza, RA, Italy
Cesare Melandri
Institute of Science, Technology and Sustainability for Ceramics (ISSMC) of the National Research Council (CNR), Via Granarolo 64, I-48018, Faenza, RA, Italy
Angela Gondolini
Institute of Science, Technology and Sustainability for Ceramics (ISSMC) of the National Research Council (CNR), Via Granarolo 64, I-48018, Faenza, RA, Italy
Sandra García-González
CIEFMA—Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain
Laia Ortiz-Membrado
CIEFMA—Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain
Miguel Morales
CIEFMA—Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain
Emilio Jimenez-Pique
CIEFMA—Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, 08019, Barcelona, Spain
Alessandra Sanson
Institute of Science, Technology and Sustainability for Ceramics (ISSMC) of the National Research Council (CNR), Via Granarolo 64, I-48018, Faenza, RA, Italy
Ceramic membranes operating at high-temperatures are a key-technology for hydrogen separation processes. Cer-cer composites based on BaCe0.65Zr0.20Y0.15O3-δ-Gd0.2Ce0.8O2-δ have gained increasing attention as asymmetric membranes for H2 purification, for their high proton-electron conductivity, 100% selectivity, temperature and chemical stability, and intrinsic lower costs compared with the Pd–based technologies. Here, BCZY-GDC composite parts were successfully fabricated for the first time by microextrusion. Water-based pastes with different solid loadings and suitable rheological properties were formulated and printed in single or multilayer structures without nozzle clogging. After deposition, the samples were osmotically dried in concentrated PEG solutions in order to obtain cracks-free green bodies. The further process optimization allowed the production of planar BCZY-GDC ceramics to be potentially applied in asymmetric membrane structures. The mechanical properties of the as-obtained single and multilayer structures as well as of the interface between filaments were assessed through different nanoindentation techniques.
