Direct Ink Writing of cobalt-zirconia monoliths for catalytic applications: A novel single-step fabrication approach
Por:
Razavi, SA, Fargas, G, Vilella-Crosas T, Serrano, I, Laguna-Bercero, MA, Llanes, L, Rodríguez, D, Ginebra MP, Llorca, J and Morales, M
Publicada:
1 may 2025
Ahead of Print:
1 dic 2024
Resumen:
Additive manufacturing technologies are revolutionizing the fabrication of ceramic catalysts through hierarchical design to enhance catalytic performance and simultaneously improving the efficiency of the manufacturing process by decreasing the initial investment and production steps. This work proposes a fabrication process of cobalt-zirconia monoliths based on Direct-Ink Writing of Co-enriched hydrogel-based ceramic inks, and the debinding and sintering at 600 degrees C in a single thermal treatment. The effect of Co precursor amount (3.0 -7.0 wt% Co) on the rheological properties of inks and the catalytic performance in ethanol steam reforming is investigated. The results reveal the successful incorporation of Co into rectilinear monoliths with 50% infill, obtaining strongly Co-rich surfaces. The remarkable catalytic performance of the 5.0 wt% Co monolith at 300-600 degrees C confirms the feasibility of this novel single-step approach, reaching an appropriate balance between catalytic activity and printability. This outcome may represent a push towards the fabrication of fully 3D-printed monolithic catalysts.
Filiaciones:
Univ Politecn Catalunya Barcelona Tech, Dept Mat Sci & Engn, CIEFMA,
Campus Diagonal Besos-EEBE, Barcelona 08019, Spain
Univ Politecn Catalunya Barcelona Tech, Ctr Res Multiscale Sci & Engn
Barcelona, Campus Diagonal Besos EEBE, Barcelona 08019, Spain
Univ Politecn Catalunya Barcelona Tech, Dept Mat Sci & Engn, Biomat
Biomech & Tissue Engn Grp, Campus Diagonal Besos EEBE, Barcelona 08019,
Spain
Inst Recerca St Joan Deu, Santa Rosa,39-57, Esplugas de Llobregat 08950,
Barcelona, Spain
Univ Politecn Catalunya Barcelona Tech, Inst Energy Technol, Barcelona
08019, Spain
Univ Politecn Catalunya Barcelona Tech, Dept Chem Engn, Campus Diagonal
Besos EEBE, Barcelona 08019, Spain
Carlos III Hlth Inst, Ctr Invest Biomed Red Bioingn Biomed & Nanomed
CIB, Madrid, Spain
Barcelona Inst Sci & Technol, Inst Bioengn Catalonia IBEC, Barcelona,
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