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

Karsten, T; Middelkoop, V; Matras, D; Vamvakeros, A; Poulston, S; Grosjean, N; Rollins, B; ... Repke, JU; + view all (2020) Multi‐scale studies of 3d printed Mn–Na–W/SiO2 catalyst for oxidative coupling of methane. Catalysts , 11 (3) pp. 1-18. 10.3390/catal11030290. Green open access

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Abstract

This work presents multi-scale approaches to investigate 3D printed structured Mn–Na–W/SiO_{2} atalysts 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 tomography 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 evolution 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.

Type: Article
Title: Multi‐scale studies of 3d printed Mn–Na–W/SiO2 catalyst for oxidative coupling of methane
Open access status: An open access version is available from UCL Discovery
DOI: 10.3390/catal11030290
Publisher version: https://doi.org/10.3390/catal11030290
Language: English
Additional information: © 2021 by the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Keywords: oxidative coupling of methane (OCM); fixed bed reactors; 3D printed catalysts; X-ray diffraction computed tomography (XRD-CT); operando chemical imaging
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10123994
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