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Article

Immobilization of an Iridium(I)-NHC-Phosphine Catalyst for Hydrogenation Reactions under Batch and Flow Conditions

1
Department of Physical Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary
2
Doctoral School of Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary
3
MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, P.O. Box 400, H-4002 Debrecen, Hungary
*
Author to whom correspondence should be addressed.
Academic Editor: Mauro Bassetti
Catalysts 2021, 11(6), 656; https://doi.org/10.3390/catal11060656
Received: 30 April 2021 / Revised: 13 May 2021 / Accepted: 21 May 2021 / Published: 22 May 2021
(This article belongs to the Special Issue Catalysis in Heterocyclic and Organometallic Synthesis)
Na2[Ir(cod)(emim)(mtppts)] (1) with high catalytic activity in various organic- and aqueous-phase hydrogenation reactions was immobilized on several types of commercially available ion-exchange supports. The resulting heterogeneous catalyst was investigated in batch reactions and in an H-Cube flow reactor in the hydrogenation of phenylacetylene, diphenylacetylene, 1-hexyne, and benzylideneacetone. Under proper conditions, the catalyst was highly selective in the hydrogenation of alkynes to alkenes, and demonstrated excellent selectivity in C=C over C=O hydrogenation; furthermore, it displayed remarkable stability. Activity of 1 in hydrogenation of levulinic acid to γ-valerolactone was also assessed. View Full-Text
Keywords: flow reactor; hydrogenation; immobilization; iridium; N-heterocyclic carbene flow reactor; hydrogenation; immobilization; iridium; N-heterocyclic carbene
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MDPI and ACS Style

Kovács, H.; Orosz, K.; Papp, G.; Joó, F.; Horváth, H. Immobilization of an Iridium(I)-NHC-Phosphine Catalyst for Hydrogenation Reactions under Batch and Flow Conditions. Catalysts 2021, 11, 656. https://doi.org/10.3390/catal11060656

AMA Style

Kovács H, Orosz K, Papp G, Joó F, Horváth H. Immobilization of an Iridium(I)-NHC-Phosphine Catalyst for Hydrogenation Reactions under Batch and Flow Conditions. Catalysts. 2021; 11(6):656. https://doi.org/10.3390/catal11060656

Chicago/Turabian Style

Kovács, Henrietta, Krisztina Orosz, Gábor Papp, Ferenc Joó, and Henrietta Horváth. 2021. "Immobilization of an Iridium(I)-NHC-Phosphine Catalyst for Hydrogenation Reactions under Batch and Flow Conditions" Catalysts 11, no. 6: 656. https://doi.org/10.3390/catal11060656

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