3D-printed structured catalysts for CO2 methanation reaction: Advancing of gyroid-based geometries
Reviewartikel, 2022

This work investigates the CO2 methanation rate of structured catalysts by tuning the geometry of 3D-printed metal Fluid Guiding Elements (FGEs) structures based on periodically variable pseudo-gyroid geometries. The enhanced performance showed by the structured catalytic systems is mostly associated with the capability of the FGEs substrate geometries for efficient heat usages. Thus, variations on the channels diameter resulted in ca. 25% greater CO2 conversions values at intermediate temperature ranges. The highest void fraction evidenced in the best performing catalyst (3D-1) favored the radial heat transfer and resulted in significantly enhanced catalytic activity, achieving close to equilibrium (75%) conversions at 400 °C and 120 mL/min. For the 3D-1 catalyst, a mathematical model based on an experimental design was developed thus enabling the estimation of its behavior as a function of temperature, spatial velocity, hydrogen to carbon dioxide (H2/CO2) ratio, and inlet CO2 concentration. Its optimal operating conditions were established under 3 different scenarios: 1) no restrictions, 2) minimum H2:CO2 ratios, and 3) minimum temperatures and H2/CO2 ratio. For instance, for the lattest scenario, the best CO2 methanation conditions require operating at 431 °C, 200 mL/min, H2/CO2 = 3 M ratio, and inlet CO2 concentration = 10 %.

Fluid guiding elements

Structured catalysts

Experiment design

Triply periodic minimal surfaces

CO methanation 2

3D-printing

Författare

Miriam González-Castaño

Brandenburgische Technische Universität

Francisco Baena-Moreno

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik, Energiteknik 2

Universidad de Sevilla

Brandenburgische Technische Universität

Juan Carlos Navarro de Miguel

CSIC-USE - Instituto de Ciencia de Materiales de Sevilla (ICMS)

Kamal U.M. Miah

Brandenburgische Technische Universität

Fátima Arroyo-Torralvo

Universidad de Sevilla

Ralf Ossenbrink

Brandenburgische Technische Universität

José Antonio Odriozola

CSIC-USE - Instituto de Ciencia de Materiales de Sevilla (ICMS)

University of Surrey

Walther Benzinger

Karlsruher Institut für Technologie (KIT)

Andreas Hensel

Karlsruher Institut für Technologie (KIT)

Achim Wenka

Karlsruher Institut für Technologie (KIT)

Harvey Arellano-García

Brandenburgische Technische Universität

University of Surrey

Energy Conversion and Management

0196-8904 (ISSN)

Vol. 258 115464

Ämneskategorier

Energiteknik

Kemiska processer

Annan kemiteknik

DOI

10.1016/j.enconman.2022.115464

Mer information

Senast uppdaterat

2022-04-08