Multi‐scale studies of 3d printed Mn–Na–W/SiO2 catalyst for oxidative coupling of methane

Tim Karsten (Corresponding author), Vesna Middelkoop, Dorota Matras, Antonis Vamvakeros, Stephen Poulston, Nicolas Grosjean, Benjamin Rollins, Fausto Gallucci, Hamid R. Godini, Simon D.M. Jacques, Andrew M. Beale, Jens Uwe Repke

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

This work presents multi‐scale approaches to investigate 3D printed structured Mn–Na– W/SiO2 catalysts used for the oxidative coupling of methane (OCM) reaction. The performance of the 3D printed catalysts has been compared to their conventional analogues, packed beds of pellets and powder. The physicochemical properties of the 3D printed catalysts were investigated using scanning electron microscopy, nitrogen adsorption and X‐ray diffraction (XRD). Performance and durability tests of the 3D printed catalysts were conducted in the laboratory and in a miniplant under real reaction conditions. In addition, synchrotron‐based X‐ray diffraction computed tomog-raphy technique (XRD‐CT) was employed to obtain cross sectional maps at three different positions selected within the 3D printed catalyst body during the OCM reaction. The maps revealed the evo-lution of catalyst active phases and silica support on spatial and temporal scales within the interiors of the 3D printed catalyst under operating conditions. These results were accompanied with SEM‐ EDS analysis that indicated a homogeneous distribution of the active catalyst particles across the silica support.

Original languageEnglish
Article number290
Number of pages18
JournalCatalysts
Volume11
Issue number3
DOIs
Publication statusPublished - 24 Feb 2021

Keywords

  • Fixed bed reactors; 3D printed catalysts; X‐ray diffraction computed tomography (XRD‐CT)
  • Operando chemical imaging
  • Oxidative coupling of methane (OCM)

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