Synthesis, Characterization, and Nanocatalysis Application of Core–Shell Superparamagnetic Nanoparticles of Fe3O4@Pd

Cappelletti, Ariel Leonardo; Uberman, Paula M.; Martín, Sandra Elizabeth; Saleta, M. E.; Troiani, Horacio Esteban; Sánchez, R.D.; Carbonio, R. E.; Strumia, Miriam Cristina

doi:10.1071/ch14722

Cited by 10 publications

(7 citation statements)

References 53 publications

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“…The heat-induced quasi-intramolecular redox reactions of [ML n ](XO 4 ) m complexes containing reducing ligands and oxidizing anions (where M = Cu, Zn, Cd, Co; L = NH 3 or pyridine, n = 2–6, and m = 0.5–3, and X = Mn, Cl, S, or Mo) in a solid phase ensure a convenient way to prepare simple or mixed-transition metal oxides with nanometer-sized particles. − These oxides, including nanosized iron oxide composites, − are active catalysts in various industrially important processes as their structures contain defects and their metallic components have variable valence states. − …”

Section: Introductionmentioning

confidence: 99%

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O_x Catalysts for CO₂ Hydrogenation

et al. 2022

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Research on new reaction routes and precursors to prepare catalysts for CO 2 hydrogenation has enormous importance. Here, we report on the preparation of the permanganate salt of the urea-coordinated iron(III), [hexakis(urea- O )iron(III)]permanganate ([Fe(urea-O) 6 ](MnO 4 ) 3 ) via an affordable synthesis route and preliminarily demonstrate the catalytic activity of its (Fe,Mn)O x thermal decomposition products in CO 2 hydrogenation. [Fe(urea-O) 6 ](MnO 4 ) 3 contains O-coordinated urea ligands in octahedral propeller-like arrangement around the Fe 3+ cation. There are extended hydrogen bond interactions between the permanganate ions and the hydrogen atoms of the urea ligands. These hydrogen bonds serve as reaction centers and have unique roles in the solid-phase quasi-intramolecular redox reaction of the urea ligand and the permanganate anion below the temperature of ligand loss of the complex cation. The decomposition mechanism of the urea ligand (ammonia elimination with the formation of isocyanuric acid and biuret) has been clarified. In an inert atmosphere, the final thermal decomposition product was manganese-containing wuestite, (Fe,Mn)O, at 800 °C, whereas in ambient air, two types of bixbyite (Fe,Mn) 2 O 3 as well as jacobsite (Fe,Mn) T-4 (Fe,Mn) OC-6 2 O 4 ), with overall Fe to Mn stoichiometry of 1:3, were formed. These final products were obtained regardless of the different atmospheres applied during thermal treatments up to 350 °C. Disordered bixbyite formed first with inhomogeneous Fe and Mn distribution and double-size supercell and then transformed gradually into common bixbyite with regular structure (and with 1:3 Fe to Mn ratio) upon increasing the temperature and heating time. The (Fe,Mn)O x intermediates formed under various conditions showed catalytic effect in the CO 2 hydrogenation reaction with <57.6% CO 2 conversions and <39.3% hydrocarbon yields. As a mild solid-phase oxidant, hexakis(urea- O )iron(III) permanganate, was found to be selective in the transformation of (un)substituted benzylic alcohols into benzaldehydes and benzonitriles.

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Section: Introductionmentioning

confidence: 99%

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O_x Catalysts for CO₂ Hydrogenation

et al. 2022

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“…3 Surprisingly, the Fe 3 O 4 prepared in TEG was dispersible in water and ethanol and kept its colloid behavior for several months due to the leftover hydrophobic TEG film on the surface. 3 93 The average size of the 1.25−1.35 nm thick Pd shell-covered SPNS-Fe 3 O 4 was 5.1 ± 0.1 nm, and it had good catalytic activity in the Suzuki−Miyaura coupling reaction of piodoanisole with boronic acids (>93% conversion and >80% isolated yield). 93 7.1.3.…”

Section: As Precursor Materials In the Preparation Of Simple Or Mixedmentioning

confidence: 97%

Hexakis(urea-O)iron Complex Salts as a Versatile Material Family: Overview of Their Properties and Applications

Béres,

Homonnay,

Kótai

2024

ACS Omega

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Due to their Fe-and N-containing reactive urea ligand content, the hexakis(urea-O)iron(II) and hexakis(urea-O)iron(III) complexes were found to be versatile materials in various application fields of industry and environmental protection. In our present work, we have comprehensively reviewed the synthesis, structural and spectroscopic details, and thermal properties of hexakis(urea-O)iron(II) and hexakis-(urea-O)iron(III) salts with different anions (NO

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“…Cappelletti et al reported the synthesis of a Pd catalyst witha superparamagnetic Fe 3 O 4 core and a very thin Pd shell [ 38 ]. Fe 3 O 4 superparamagnetic NPs (SPNPs) were synthesized through a new strategy whereby very small and narrow size distribution Fe 3 O 4 NPs were obtained via replacing iron(III) acetylacetonate (Fe(Acac) 3 ) as a metal source with an iron‒urea complex (Fe-urea).…”

Section: Novel Types Of Magnetic Nanoparticles-supported Palladiummentioning

confidence: 99%

“… Synthesis of precursors, Fe 3 O 4 -OA and Fe 3 O 4 @Pd-OA superparamagnetic nanoparticles (SPNPs) (OA, oleylamine; DBE, dibenzylether). Reproduced with permission from [ 38 ]. …”

Section: Figures and Schemesmentioning

confidence: 99%

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Advances in Magnetic Nanoparticles-Supported Palladium Complexes for Coupling Reactions

Nasrollahzadeh

2018

Molecules

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Carbon‒carbon (C‒C) and carbon‒heteroatom (C‒X) bonds that form via transition-metal-catalyzed processes have been extensively used in the organic synthesis and preparation of natural products and important compounds such as heterocycles, biologically active molecules, and dendrimers. Among the most significant catalysts, magnetic nanoparticles-supported palladium complexes are very effective, versatile, and heterogeneous catalysts for a wide range of C‒C and C‒X coupling reactions due to their reusability, thermal stability, and excellent catalytic performance. In this review, recent advances to develop magnetic nanoparticles supported palladium complexes, including their preparation, characterization, catalytic application, and reusability in the formation of both C‒C and C‒X bonds, by authors such as Sonogashira, Heck, Suzuki‒Miyaura, and Stille, and a few examples concerning N-arylation, S-arylation, and Csp2-P coupling reactions are discussed.

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Synthesis, Characterization, and Nanocatalysis Application of Core–Shell Superparamagnetic Nanoparticles of Fe3O4@Pd

Cited by 10 publications

References 53 publications

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O_x Catalysts for CO₂ Hydrogenation

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O_x Catalysts for CO₂ Hydrogenation

Hexakis(urea-O)iron Complex Salts as a Versatile Material Family: Overview of Their Properties and Applications

Advances in Magnetic Nanoparticles-Supported Palladium Complexes for Coupling Reactions

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Synthesis, Characterization, and Nanocatalysis Application of Core–Shell Superparamagnetic Nanoparticles of Fe3O4@Pd

Cited by 10 publications

References 53 publications

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)Ox Catalysts for CO2 Hydrogenation

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)Ox Catalysts for CO2 Hydrogenation

Hexakis(urea-O)iron Complex Salts as a Versatile Material Family: Overview of Their Properties and Applications

Advances in Magnetic Nanoparticles-Supported Palladium Complexes for Coupling Reactions

Contact Info

Product

Resources

About

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O_x Catalysts for CO₂ Hydrogenation

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O_x Catalysts for CO₂ Hydrogenation