A Highly Active N-Doped Carbon Supported CoFe Alloy Catalyst for Hydroformylation of C₈ Olefins

Abstract

The development of inexpensive and efficient Cobased heterogeneous catalysts for hydroformylation reactions remains an enormous challenge. In this paper, N-doped carbon supported CoFe bimetallic catalysts (CoFe/NC) are successfully synthesized through a simple thermal decomposition of a mixture of Co(acac) 2 and Fe(acac) 3 , and melamine with activated carbon in N 2 atmosphere. With the CoFe/NC-800 as the catalyst, hydroformylation of diisobutene proceeded smoothly in THF under 4 MPa syngas at 130 °C to obtain 92% conversion of diisobutene and 79.6% selectivity to isononyl aldehydes. Detailed studies revealed that the N-doped carbon supported FeCo alloy may be the active species in which nitrogen might act as ligand played an important role in improvement of catalytic performance of hydroformylation reactions. The present study provided meaningful insights into tuning the catalytic performance of non-noble metal heterogeneous catalysts for carbonylation reaction.

Catalytic Hydrogenation of Furfural over UiO‐66‐NH2‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

“…Compared with the single‐tooth Ru−N coordination in UiO‐66‐NH 2 ‐Ru, the 2‐tooth Ru−N coordination in UiO‐66‐Pyr‐Ru was more stable, so the Ru loading and dispersity in the Ru/NC‐ZrO 2 prepared therefrom were both higher than those of Ru/C‐ZrO 2 (Table 1). Moreover, the interaction between N‐doped carbon and the metal particles could moderate the electronic structures and coordination environment of the active sites, thus protecting the metal particles from aggregation [37] . Notably, both C‐ZrO 2 and NC‐ZrO 2 had certain furfural hydrogenation activity, as the furfural conversion were 24.8 % and 14.8 % respectively, and the furfuryl alcohol selectivity were both above 98 %.…”

“…Moreover, the interaction between N-doped carbon and the metal particles could moderate the electronic structures and coordination environment of the active sites, thus protecting the metal particles from aggregation. [37] Notably, both C-ZrO 2 and NC-ZrO 2 had certain furfural hydrogenation activity, as the furfural conversion were 24.8 % and 14.8 % respectively, and the furfuryl alcohol selectivity were both above 98 %. Since Zr 4 + has no C=O direct hydrogenation activity in a hydrogen condition and especially, acetone can be formed in the furfural hydrogenation reaction systems of both C-ZrO 2 and NC-ZrO 2 , we speculate that transfer hydrogenation with isopropanol as the hydrogen donor did occur.…”

Outlook of Cobalt-Based Catalysts for Heterogeneous Hydroformylation of Olefins: From Nanostructures to Single Atoms

“…The model Co–Co 2 C catalyst was reproduced with permission from ref . Copyright 2021 Elsevier B.V. Model CoFe/NC catalysts were reproduced with permission from ref . Copyright 2021 American Chemical Society.…”

Theoretical insights into the catalytic mechanism of propylene hydroformylation over Co–N–C materials

“…18 M-N-C is considered to be the potential active site for hydroformylation. 19,20 Recently, Javier et al 19 successfully prepared Ru single-atom catalysts highly dispersed on the N/C surface. This catalyst consists of isolated Ru atoms and disordered clusters, where the Ru atoms on the catalyst surface form Ru-N-C sites.…”