3D-printed structured catalysts for CO2 methanation reaction: Advancing of gyroid-based geometries
Review article, 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 %.

Experiment design

Structured catalysts

Triply periodic minimal surfaces

Fluid guiding elements

3D-printing

CO methanation 2

Author

Miriam González-Castaño

Brandenburg University of Technology

Francisco Baena-Moreno

Brandenburg University of Technology

University of Seville

Chalmers, Space, Earth and Environment, Energy Technology

Juan Carlos Navarro de Miguel

Spanish National Research Council (CSIC)

Kamal U.M. Miah

Brandenburg University of Technology

Fátima Arroyo-Torralvo

University of Seville

Ralf Ossenbrink

Brandenburg University of Technology

José Antonio Odriozola

University of Surrey

Spanish National Research Council (CSIC)

Walther Benzinger

Karlsruhe Institute of Technology (KIT)

Andreas Hensel

Karlsruhe Institute of Technology (KIT)

Achim Wenka

Karlsruhe Institute of Technology (KIT)

Harvey Arellano-García

Brandenburg University of Technology

University of Surrey

Energy Conversion and Management

0196-8904 (ISSN)

Vol. 258 115464

Subject Categories (SSIF 2011)

Energy Engineering

Chemical Process Engineering

Other Chemical Engineering

DOI

10.1016/j.enconman.2022.115464

More information

Latest update

3/9/2025 1