Elucidating the ionic liquid distribution in monolithic SILP hydroformylation catalysts by magnetic resonance imaging
RSC Advances, vol. 10, pp. 18487–18495
Abstract
Monolithic silicon carbide supported ionic liquid-phase (SILP) Rh-catalysts have very recently been introduced for gas-phase hydroformylation as an important step toward industrial upscaling. This study investigates the monolithic catalyst system in combination with different impregnation procedures with non-invasive magnetic resonance imaging (MRI). The findings were supported by X-ray microtomography (micro-CT) data of the monolithic pore structure and a catalytic performance test of the catalyst system for 1-butene gas-phase hydroformylation. MRI confirmed a homogeneous impregnation of the liquid phase throughout the full cross-section of the cylindrical monoliths. Consistent impregnations from one side to the other of the monoliths were achieved with a stabilizer in the system that helped preventing inhomogeneous rim formation. External influences relevant for industrial application, such as long-term storage and temperature exposure, did not affect the homogeneous liquid-phase distribution of the catalyst. The work elucidates important parameters to improve liquid-phase catalyst impregnation to obtain efficient monolithic catalysts for industrial exploitation in gas-phase hydroformylation as well as other important industrial processes.
Authors 10
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Technical University of Denmark
Affiliation as printed
Centre for Catalysis and Sustainable Chemistry
Denmark
Department of Chemistry
Technical University of Denmark
Technical University of Denmark, Centre for Catalysis and Sustainable Chemistry, Department of Chemistry, Kemitorvet, Building 207, 2800 Kgs. Lyngby, Denmark
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Stefan Benders Aachen
Affiliation as printed
52064 Aachen
Germany
Institut für Technische und Makromolekulare Chemie
RWTH Aachen University
-
Technical University of Denmark
Affiliation as printed
Centre for Catalysis and Sustainable Chemistry
Denmark
Department of Chemistry
Technical University of Denmark
Technical University of Denmark, Centre for Catalysis and Sustainable Chemistry, Department of Chemistry, Kemitorvet, Building 207, 2800 Kgs. Lyngby, Denmark
-
Friedrich-Alexander-Universität Erlangen-Nürnberg
Affiliation as printed
91058 Erlangen
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Germany
Lehrstuhl für Chemische Reaktionstechnik (CRT)
-
Technical University of Denmark
Affiliation as printed
Denmark
Department of Physics
Technical University of Denmark
Technical University of Denmark, Department of Physics, Fysikvej, Building 309, 2800 Kgs. Lyngby, Denmark
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Friedrich-Alexander-Universität Erlangen-Nürnberg
Affiliation as printed
91058 Erlangen
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Germany
Lehrstuhl für Chemische Reaktionstechnik (CRT)
-
Markus Küppers Aachen
Affiliation as printed
52064 Aachen
Germany
Institut für Technische und Makromolekulare Chemie
RWTH Aachen University
-
Bernhard Blümich Aachen
Affiliation as printed
52064 Aachen
Germany
Institut für Technische und Makromolekulare Chemie
RWTH Aachen University
-
Technical University of Denmark
Affiliation as printed
Centre for Catalysis and Sustainable Chemistry
Denmark
Department of Chemistry
Technical University of Denmark
Technical University of Denmark, Centre for Catalysis and Sustainable Chemistry, Department of Chemistry, Kemitorvet, Building 207, 2800 Kgs. Lyngby, Denmark
-
Anders Riisager corresponding
Technical University of Denmark
Affiliation as printed
Centre for Catalysis and Sustainable Chemistry
Denmark
Department of Chemistry
Technical University of Denmark
Technical University of Denmark, Centre for Catalysis and Sustainable Chemistry, Department of Chemistry, Kemitorvet, Building 207, 2800 Kgs. Lyngby, Denmark
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