Work

Selective laser melting porous metal substrate to prepare high loading catalysts for Fischer-Tropsch synthesis

Year: 2025

Type: article

Abstract: Due to high thermal conductivity and excellent design flexibility, selective laser melting (SLM) metal substrate structured catalysts are widely used to enhance heat transfer in highly exothermic and endothermic reactions. However, the systematic investigation of porosity effects in SLM-processed substrates on active component distribution and catalytic performance has not been conducted. Therefore, we conducted a comparative study of structured catalysts using dense rolling FeCrAl and porous SLM AlSiMg substrates. SLM AlSiMg substrate displayed abundant micro-nano-scale pores after corrosion, and its pore area was 196 times larger than FeCrAl. The porous AlSiMg substrate modified the Co distribution and improved the dispersion in the coating, exhibiting a smaller particle size (15 nm) compared to FeCrAl (21 nm). Moreover, a fraction of Co was loaded on the porous substrate and exhibited catalytic activity, showing 20 % CO conversion and 96 % C 5+ selectivity at 230 °C and 4000 h −1 . Consequently, the optimal Co-loading of the AlSiMg substrate catalyst was higher than the FeCrAl substrate, which increased the maximum C 5+ yield by 126 %. These results confirm that porous metal substrates effectively improve catalyst activity, facilitating the application of SLM technology in catalyst development.

Source: International Journal of Hydrogen Energy

DOI: 10.1016/j.ijhydene.2025.152903

Authors: Xingwei Wang, Li Zhang

Institution: East China University of Science and Technology

Language: English

Topic: Catalysts for Methane Reforming

Subfield: Catalysis

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,730

Funders: National University's Basic Research Foundation of China, Fundamental Research Funds for the Central Universities