Direct recycling of 3D-printed Co-YDZ catalysts for ethanol steam reforming
Additive manufacturing enhances the catalyst performance via hierarchical design. To address environmental and resource concerns, this work aims to fabricate directly recycled 3D-printed monoliths using Direct-Ink Writing (DIW) from 100¿% recovered cobalt-zirconia powders. Virgin cobalt-zirconia mon...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/447377 |
| Acceso en línea: | https://hdl.handle.net/2117/447377 https://dx.doi.org/10.1016/j.jece.2025.120246 |
| Access Level: | acceso abierto |
| Palabra clave: | Additive manufacturing Direct-ink writing Zirconia Recycled ceramics Catalyst ethanol steam reforming Hydrogen production Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient |
| Sumario: | Additive manufacturing enhances the catalyst performance via hierarchical design. To address environmental and resource concerns, this work aims to fabricate directly recycled 3D-printed monoliths using Direct-Ink Writing (DIW) from 100¿% recovered cobalt-zirconia powders. Virgin cobalt-zirconia monoliths were firstly fabricated by DIW of 3.0–7.0¿wt% Co-enriched hydrogel-based ceramic inks, followed by calcination at 600°C in a single thermal treatment. After testing the catalytic performance of monoliths in ethanol steam reforming, 3D-printed cobalt-zirconia monoliths were fragmented and subjected to subsequent milling and sieving steps to recover composite cobalt-zirconia powders with the appropriate properties for reuse in DIW. The recovered powders, inks and monoliths were microstructurally, rheologically and catalytically characterized, and then compared to catalysts constituted by virgin materials. The rheology properties of inks for the recycled and virgin monoliths presented an appropriate printability. Furthermore, the catalytic performance of recycled monoliths was close to that exhibited by virgin catalysts. This study demonstrates the feasibility of directly recycling fully 3D-printed catalysts, potentially reducing the environmental impact with a circular production model to enhance sustainability in the catalyst industry. |
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