期刊
CATALYSTS
卷 11, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/catal11030290
关键词
oxidative coupling of methane (OCM); fixed bed reactors; 3D printed catalysts; X-ray diffraction computed tomography (XRD-CT); operando chemical imaging
资金
- European Union's Horizon 2020 research and innovation program [679933]
- EPSRC [EP/K007467/1]
- H2020 Societal Challenges Programme [679933] Funding Source: H2020 Societal Challenges Programme
This study presents multi-scale approaches to investigate the application of 3D printed structured Mn-Na-W/SiO2 catalysts in OCM reaction, showing good performance and durability of the 3D printed catalysts. XRD-CT technique revealed the evolution of active phases and supports within the catalyst body.
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 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.
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