Magnetic Core–Shell Nanoparticles as Carriers for Olefin Dimerization Catalysts

Abstract

We report the covalent support of functionalized nickel complexes on magnetic core–shell hybrid particles γ‐Fe2O3/SiO2. Two completely different ways of connecting the particle with these nickel complexes were carried out. The first approach used the hydrosilylation method between the alkene‐substituted nickel complex and a silane. In a second approach, the particles were connected with the complexes by means of click chemistry (copper‐catalyzed Huisgen 1,3‐dipolar cycloaddition). For this purpose, the nickel complexes were substituted with an alkyne moiety. Transmission and scanning electron microscopies, energy‐dispersive X‐ray diffraction, and FTIR spectroscopy were the methods employed to characterize the successful heterogenization of the nickel complexes.

Core–shell nanoparticles: synthesis and applications in catalysis and electrocatalysis

“…99 This synthetic strategy has been widely applied for the fabrication of various bifunctional nanomaterials, e.g., magnetic and optically/photocatalytically active Fe 3 O 4 @ZnS NPs. After postdoctoral research at Robert Robinson Laboratories, Liverpool, UK, he was a faculty member at Baylor College of Medicine and Sam Houston State University prior to joining the Sustainable Technology Division at the US Environmental Protection Agency in 1999.…”

“…selectivity of the water-gas-shift reaction was improved by using CSNs as catalysts. [104][105][106][107][108][109][110][111][112][113][114][115][116][117][118][119][120][121] 99 This synthetic strategy has been widely applied for the fabrication of various bifunctional nanomaterials, e.g., magnetic and optically/photocatalytically active Fe 3 O 4 @ZnS NPs.…”

“…By incorporating magnetic materials, multifunctional CSNs with catalytic as well as magnetic properties (the latter being useful for the ease of recyclability/magnetic separation of the CSNs after the reaction), could be synthesized in an analogous manner. 99 This synthetic strategy has been widely applied for the fabrication of various bifunctional nanomaterials, e.g., magnetic and optically/photocatalytically active Fe 3 O 4 @ZnS NPs. 57 Stark and co-workers have reviewed nanomaterials comprising ferrite NPs and their use as a semiheterogeneous catalyst support.…”

Mononuclear complexes with heterocyclic ligands as ethylene polymerization catalysts for single-reactor bimodal polyethylene technology

“…This can be disadvantageous when processing polyolefins, and solutions are needed to overcome this problem. So far, special support materials and methods, the mixture of different catalysts, the application of dinuclear or multinuclear catalysts and the use of two or more reactors were applied [4][5][6][7][8][9][10][11][12][13]. However, the best solution is the design of catalysts that can solve all these problems in one step and in one reactor.…”

One-pot Synthesis of Size Controllable Amine-Functionalized Core-Shell Magnetic Nanoparticles for Use in Microfluidic Flow Separators

“…Surface-functionalized monodisperse iron oxide magnetic nanoparticles promise great advancement in a wide range of applications, including drug delivery, [1] magnetic resonance imaging (MRI), [2,3] bioseparation of proteins, DNA and cells, [4][5][6] catalysis, [7,8] ferrofluids, [9] data storage, [10] and adsorption [11]. The advantages of using iron oxide over other magnetic materials include low cost, ease of preparation, biocompatibility (FDA approved material) and chemical stability [12][13][14].…”