Details

Autor(en) / Beteiligte

• Davó-Quiñonero, Arantxa
• Sorolla-Rosario, Débora
• Bailón-García, Esther
• Lozano-Castelló, Dolores
• Bueno-López, Agustín

Titel

Improved asymmetrical honeycomb monolith catalyst prepared using a 3D printed template

Ist Teil von

• Journal of hazardous materials, 2019-04, Vol.368, p.638-643

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •An improved honeycomb-like monolith with asymmetrical channels has been prepared using 3D printing.•A Cu/Ceria active phase has been loaded and tested for CO oxidation in excess oxygen and for CO-PROX.•The novel support improves the reaction rate and the radial diffusion of reactants. An improved honeycomb-like monolith with asymmetrical channels, where the channels section decrease along the monolith, was fabricated using a template prepared by 3D printing. A reference honeycomb monolith was also prepared in the same way but with conventional straight channels. Cu/Ceria active phase was loaded on these supports, and SEM-EDX, Raman spectroscopy and XRD showed that the supported active phase is similar on both monoliths. The supported catalysts were tested for CO oxidation in excess oxygen and for preferential CO oxidation in H2-rich mixtures (CO-PROX), and the catalyst with the improved support achieved higher conversions in both reactions. The supported catalyst with asymmetrical channels has two benefits with regard to the counterpart catalyst with conventional symmetrical channels: improves the reaction rate with regard to the conventional one because fits better to the equation rate, and favors the turbulent regime of gases with regard to the laminar flow that prevails in symmetrical channels.