3D printed co-precipitated Ni-Al CO2 methanation catalysts by Binder Jetting: Fabrication, characterization and test in a single pellet string reactor

Hanh My Bui, Paula F. Großmann, Tabea Gros, Merle Blum, Anne Berger, Richard Fischer, Normen Szesni, Markus Tonigold, Olaf Hinrichsen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The Binder Jetting 3D printing technique was used to fabricate spherical Ni-Al CO2 methanation catalysts from co-precipitated catalyst precursor powder. Catalysts with different nickel loadings were prepared by varying the molar Ni/Al ratio (1/1, 2/1, 3/1, 5/1) during precipitation or the amount of admixed precursor powder (10, 20, 30 wt.%) for printing. XRD and TG analysis revealed phase composition and reducibility characteristics analogous to conventionally prepared Ni-Al catalysts. TEM displayed nickel particle sizes as small as 3.9 nm with a Ni dispersion of up to 13.4 % determined by H2 chemisorption. Moreover, meso- and macroporous catalyst pellets were generated with a specific surface area of up to 192 m2∕gcat. The catalysts NiAl11–20, NiAl21–20 and NiAl51–20 were exemplarily tested in a single pellet string reactor where CO2 conversions of up to 99 % and a high selectivity towards CH4 was observed at ptot = 9 bar upon reaching thermodynamic equilibrium.

Original languageEnglish
Article number118760
JournalApplied Catalysis A: General
Volume643
DOIs
StatePublished - 5 Aug 2022

Keywords

  • Binder Jetting
  • Catalyst characterization
  • Co-precipitation
  • Heterogeneous Catalysis
  • Methanation
  • Nickel catalyst
  • Single pellet string reactor

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