In Situ MOF-Templating of Rh Nanocatalysts under Reducing Conditions
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Date
2020
Authors
Lippi, R.
Coghlan, C.J.
Howard, S.C.
Easton, C.D.
Gu, Q.
Patel, J.
Sumby, C.J.
Kennedy, D.F.
Doonan, C.J.
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Journal article
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Australian Journal of Chemistry, 2020; 73(12):1271-1283
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Renata Lippi, Campbell J. Coghlan, Shaun C. Howard, Christopher D. Easton, Qinfen Gu, Jim Patel, Christopher J. Sumby, Danielle F. Kennedy, and Christian J. Doonan
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Abstract
Manganese-based metal–organic frameworks (MOFs) metalated with Rh were used as pre-catalysts for CO2 hydrogenation. Activated in situ (80% H2, 20%CO2, 3508C), the resulting templated catalysts displayed CO2 conversion of up to 20 %, with CH4 as the main product. Used catalysts were compared with samples templated in 5% H2/Ar at 3508C using powder X-ray diffraction, electron microscopy, energy dispersive spectroscopy, and X-ray photoelectron spectroscopy. It was found that under reducing atmosphere Rh0 nanoparticles formed and organic MOF components decomposed, which allowed growth of MnO or MnCO3 and the formation of a mesh of catalytic Rh0 nanoparticles.
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Published online: 3 November 2020
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Journal compilation © CSIRO 2020 Open Access CC BY-NC-ND