Authors:
S.A. Razavi (1,2), M. Morales (1,2), I. Serrano (2,3), L. Llanes (1,2), J. Llorca (2,3), G. Fargas (1,2)
1- CIEFMA-Department of Materials Science, Universitat Politècnica de Catalunya, Barcelona-Tech, Spain.
2- Centre for Research in Multiscale Engineering of Barcelona, Universitat Politècnica de Catalunya, Barcelona-Tech, Spain.
3- Institute of Energy Technologies and Department of Chemical Engineering, Universitat Politècnica de Catalunya, Barcelona-Tech, Spain.
Abstract:
Direct Ink Writing (DIW) is an innovative technique for fabricating complex ceramic catalysts with several advantages compared with traditional catalysts. However, these catalysts still face challenges in achieving adequate catalytic performance and structural integrity. This study focuses on DIW-fabricated 3mol% yttria-stabilized zirconia (3YSZ) monoliths coated with a cobalt-3YSZ catalytic functional layer. After the sintering process, the monoliths were coated by the dip-coating technique, using inks based on cobalt (II) acetate tetrahydrate and 3YSZ, and re-sintered. The microstructure of coated monoliths was characterized by field emission scanning electron microscopy equipped with an EDX detector and Raman spectroscopy. Finally, the catalytic performance of monoliths was investigated by conducting the Ethanol Steam Reforming (ESR) reaction. Results show that the dip-coating process uniformly coated the monoliths. The coated monolith significantly enhanced catalytic performance and reduced the temperature of the complete ethanol conversion compared with the uncoated one.
DOI:
https://doi.org/10.59499/EP246280837
