Science and Technology Production
Article
Authorship
Courtalón, Natalia L.
;
Milt, Viviana G.
;
Miró, Eduardo E.
;
BANUS, EZEQUIEL DAVID
;
Bortolozzi, Juan P.
Date
2026
Publishing House and Editing Place
El Sevier
Magazine
Journal of Environmental Chemical Engineering,
vol. 14
- ISSN 2213-3437
El Sevier
El Sevier
ISSN
2213-3437
Summary
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SIGEVA
Additive manufacturing has enabled significant scientific advances across a wide range of fields. In chemical engineering, it contributes to reaction intensification through the development of structured catalysts. Considering the limited range of materials and applications reported to date, this work aims to develop low-cost 3D-printed structured catalysts for oxidation reactions of environmental relevance. Clay-based structures were fabricated by Direct Ink Writing (DIW), a 3D printing techni...
Additive manufacturing has enabled significant scientific advances across a wide range of fields. In chemical engineering, it contributes to reaction intensification through the development of structured catalysts. Considering the limited range of materials and applications reported to date, this work aims to develop low-cost 3D-printed structured catalysts for oxidation reactions of environmental relevance. Clay-based structures were fabricated by Direct Ink Writing (DIW), a 3D printing technique, and used as supports for structured catalysts. The catalysts were prepared by incorporating Co and Ce (atomic ratio 90:10) as active elements through successive impregnations with aqueous solutions of different concentrations (0.3, 0.6, and 0.9 M), achieving loadings of approximately 4 wt.%. For comparison, an analogous powder catalyst was synthesized by conventional wet impregnation. All catalysts were thoroughly characterized and evaluated in soot combustion and CO oxidation reactions. Both powder and structured catalysts exhibited high activity in the selected reactions despite the low active phase content, implying reduced manufacturing costs and environmental impact. The active phase consisted of Co₃O₄ and CeO₂, and completely covered the support surface. The 3D-printed monoliths proved suitable as catalytic supports and showed high mechanical strength. The monolithic catalyst prepared using the lowest precursor concentration displayed superior performance, attributed to a more homogeneous distribution of the active phase. Furthermore, the catalyst retained its activity after accelerated thermal aging at 900 °C for 10 h. These results demonstrate the strong potential of 3D printing technology for the fabrication of efficient structured catalysts applied to pollutants abatement.
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Key Words
Direct ink writingStructured catalystsAdditive manufacturingCO oxidationSoot abatement