Chemo-selective oxidation of sulfide to sulfoxides with H2O2 catalyzed by oxo-vanadium/Schiff-base complex immobilized on modified magnetic Fe3O4 nanoparticles as a heterogeneous and recyclable nanocatalyst

Veisi, Hojat; Rashtiani, Asra; Rostami, Amin; Shirinbayan, Mohadeseh; Hemmati, Saba

doi:10.1016/j.poly.2018.09.034

Cited by 34 publications

(7 citation statements)

References 81 publications

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“…This could be attributed to very small amount of dopant ions loading. The diffraction patterns at 2θ = 30.2, 35.5, 43.4, 56.9, and 62.8° could be assigned to the scattering from the (220), (311), (400), (511), and (440) lattice planes of cubic Fe 3 O 4 (JCPDS no. 65-3107).…”

Section: Resultsmentioning

confidence: 99%

Pd Nanoparticles Decorated on ZnO/Fe₃O₄ Cores and Doped with Mn²⁺ and Mn³⁺ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons

Kaur

Sharma

et al. 2020

ACS Appl. Nano Mater.

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In spite of the enhanced catalytic performances exhibited by the doped transition nano-metal catalysts, understanding and unraveling the mechanistic part behind the promotional nature of dopants remains a challenge. The present work involves a comparative analysis of Mn3+- and Mn2+-doped supported Pd nano-catalysts with undoped counterparts for C–C coupling, reduction, and oxidation. Efforts were made to gain deep insights into the promotional role of dopant ions. X-ray photoelectron spectroscopy spectra of fresh and reused catalysts in case of each organic transformation provided mechanistic insights into the role of dopant ions which has proved helpful in formulating mechanisms where the electronic synergism between dopants and reactant/metal nanoparticles has been depicted. The effect of Mn3+ ions on the electronic environment of aryl halide in case of C–C coupling makes the Mn3+-doped nano-catalyst more efficient, as compared to Mn2+-doped and undoped nano-catalysts. The strong electronic interactions between Mn2+ and Pd make the Mn2+-doped nano-catalyst efficiently active and selective for reduction and oxidation. The present approach provides proper evidence for the changes/interactions that are induced by the introduction of dopants in heterogeneous nano-metal catalysts. Consequently, the underlying synthetic route to design efficient doped heterogeneous transition nano-metal catalysts and a deeper mechanistic view of the promotional role of dopant will prove to be a promising approach in the field of heterogeneous nano-metal catalysis.

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Section: Resultsmentioning

confidence: 99%

Pd Nanoparticles Decorated on ZnO/Fe₃O₄ Cores and Doped with Mn²⁺ and Mn³⁺ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons

Kaur

Sharma

et al. 2020

ACS Appl. Nano Mater.

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“…Hence, the oxo-vanadium/Schiff-base complex synthesized was immobilized on the surface of the magnetic Fe3O4 nanoparticles. 76 Additionally, magnetic nanoparticle (VO(acac)@Sb@SMNPs, 21 Fig. 10) synthesized by immobilizing vanadyl acetylacetonate complex, [VO(acac)2] onto the surface of a silica magnetite nanoparticles were utilized for oxidation of sulfides and epoxidation of alkenes.…”

Section: 62mentioning

confidence: 99%

Heterogeneous vanadium Schiff base complexes in catalytic oxidation reactions

Salubi¹

2023

10.5267/j.ccl

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The chemistry of Schiff base has received remarkable attention in different applications, both organic synthesis and industries. Over the past few years many reports have been on the synthesis, characterization and application of vanadium Schiff base complexes. However, heterogeneous vanadium Schiff base catalysts are active for various oxidation reactions, making catalytic oxidation of hydrocarbons a great interest. This review summarizes the recent development of organic substrate oxidation with heterogeneous vanadium Schiff base catalysts.

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“…The choice of such strategy is suggested by the ease of recovery of the catalyst and of the process for magnetic and silica-coated magnetic nanoparticles functionalization [221,222]. This peculiar strategy is used to deposit Schiff-bases and other chelating agents dedicated either to olefins epoxidation [223][224][225][226][227][228][229], sulfide oxidation [228,230,231], alcoholysis of epoxides [232], or homocoupling of terminal alkynes [233]. Although the large number of papers available, organometallic-functionalized magnetic nanoparticles are rarely employed for fine chemicals production through biomass valorization.…”

Section: Nanoparticlesmentioning

confidence: 99%

Support–Activity Relationship in Heterogeneous Catalysis for Biomass Valorization and Fine-Chemicals Production

et al. 2021

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Heterogeneous catalysts are progressively expanding their field of application, from high-throughput reactions for traditional industrial chemistry with production volumes reaching millions of tons per year, a sector in which they are key players, to more niche applications for the production of fine chemicals. These novel applications require a progressive utilization reduction of fossil feedstocks, in favor of renewable ones. Biomasses are the most accessible source of organic precursors, having as advantage their low cost and even distribution across the globe. Unfortunately, they are intrinsically inhomogeneous in nature and their efficient exploitation requires novel catalysts. In this process, an accurate design of the active phase performing the reaction is important; nevertheless, we are often neglecting the importance of the support in guaranteeing stable performances and improving catalytic activity. This review has the goal of gathering and highlighting the cases in which the supports (either derived or not from biomass wastes) share the worth of performing the catalysis with the active phase, for those reactions involving the synthesis of fine chemicals starting from biomasses as feedstocks.

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Chemo-selective oxidation of sulfide to sulfoxides with H2O2 catalyzed by oxo-vanadium/Schiff-base complex immobilized on modified magnetic Fe3O4 nanoparticles as a heterogeneous and recyclable nanocatalyst

Cited by 34 publications

References 81 publications

Pd Nanoparticles Decorated on ZnO/Fe₃O₄ Cores and Doped with Mn²⁺ and Mn³⁺ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons

Pd Nanoparticles Decorated on ZnO/Fe₃O₄ Cores and Doped with Mn²⁺ and Mn³⁺ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons

Heterogeneous vanadium Schiff base complexes in catalytic oxidation reactions

Support–Activity Relationship in Heterogeneous Catalysis for Biomass Valorization and Fine-Chemicals Production

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Chemo-selective oxidation of sulfide to sulfoxides with H2O2 catalyzed by oxo-vanadium/Schiff-base complex immobilized on modified magnetic Fe3O4 nanoparticles as a heterogeneous and recyclable nanocatalyst

Cited by 34 publications

References 81 publications

Pd Nanoparticles Decorated on ZnO/Fe3O4 Cores and Doped with Mn2+ and Mn3+ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons

Pd Nanoparticles Decorated on ZnO/Fe3O4 Cores and Doped with Mn2+ and Mn3+ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons

Heterogeneous vanadium Schiff base complexes in catalytic oxidation reactions

Support–Activity Relationship in Heterogeneous Catalysis for Biomass Valorization and Fine-Chemicals Production

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Product

Resources

About

Pd Nanoparticles Decorated on ZnO/Fe₃O₄ Cores and Doped with Mn²⁺ and Mn³⁺ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons

Pd Nanoparticles Decorated on ZnO/Fe₃O₄ Cores and Doped with Mn²⁺ and Mn³⁺ for Catalytic C–C Coupling, Nitroaromatics Reduction, and the Oxidation of Alcohols and Hydrocarbons