Library
local_library Home Repository

Removal of carbon deposits on χ-Fe5C2 Fischer–Tropsch catalysts

Journal Article (2025)
Authors

Shiyue Li (Eindhoven University of Technology)

Robert Pestman (Eindhoven University of Technology)

Iulian Dugulan (TU Delft - RID/TS/Instrumenten groep, TU Delft - RST/Fundamental Aspects of Materials and Energy)

Zhuowu Men (National Institute of Clean-and-Low-Carbon Energy, Shenhua NICE, Future Science and Technology City, Changping District, Beijing 102211, People's Republic of China)

Peng Wang (Eindhoven University of Technology, National Institute of Clean-and-Low-Carbon Energy, Shenhua NICE, Future Science and Technology City, Changping District, Beijing 102211, People's Republic of China)

Emiel J M Hensen (Eindhoven University of Technology)

Research Group
RST/Fundamental Aspects of Materials and Energy
To reference this document use:
https://doi.org/10.1016/j.jcat.2025.116030
More Info
expand_more
Publication Year
2025
Language
English
Research Group
RST/Fundamental Aspects of Materials and Energy
Volume number
445
DOI:
https://doi.org/10.1016/j.jcat.2025.116030
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

The removal of carbon deposits from carburized Fe-based Fischer–Tropsch catalysts is a critical aspect of their performance. In this study, a method is presented to remove carbon deposits from freshly prepared χ-Fe5C2. The method involves successive passivation and reduction steps, which do not affect the bulk structure of the χ-Fe5C2 catalyst. The passivation step transforms the carbonaceous deposits from a graphitic structure to a disordered oxygen-functionalized structure, facilitating its removal by a reduction step in hydrogen. This results in a higher initial activity of the catalyst and substantially shortens the induction period observed without such pretreatment. The findings underscore the possibility of improving catalytic performance of Fe-carbides by changing the structure and reactivity of carbonaceous deposits.