Acetylacetonate complexes of vanadium and molybdenum supported on functionalized boehmite nano-particles for the catalytic epoxidation of alkenes

Mirzaee, Mahdi; Bahramian, Bahram; Gholizadeh, Jafar; Feizi, Abdollah; Gholami, R

doi:10.1016/j.cej.2016.09.055

Cited by 57 publications

(42 citation statements)

References 37 publications

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“…It shows that the epoxidation reaction is the first order kinetic reaction that solely depended on the substrate concentrations. The results they observed was consistent with results from other groups . Mirzaee et al .…”

Section: Mo‐based Catalystssupporting

confidence: 93%

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Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Yan

Liu

Wang

et al. 2019

The Chemical Record

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Molybdenum complexes are versatile and efficient for liquid phase olefin epoxidation reactions. Rational design of catalysts is critical to achieve high atom efficiency during epoxidation processes. Although liquid phase epoxidation has been a popular topic for decades, three key issues, (a) rational control of morphology of molybdenum nanoparticles, (b) manipulating metal‐support interaction and (c) altering electronic configuration at molybdenum center remains unsolved in this area. Therefore, in this paper, we have critically revised recent research progress on heterogeneous molybdenum catalysts for facile liquid phase olefin epoxidation in terms of catalyst synthesis, surface characterization, catalytic performance and structure‐function relationship. Furthermore, plausible reaction mechanisms will be systematically discussed with the aim to provide insights into fundamental understanding on novel epoxidation chemistry.

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Section: Mo‐based Catalystssupporting

confidence: 93%

“…The results they observed was consistent with results from other groups . Mirzaee et al . evaluated Mo based boehmite nanoparticles for cyclooctene epoxidation.…”

Section: Mo‐based Catalystssupporting

confidence: 89%

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Yan

Liu

Wang

et al. 2019

The Chemical Record

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“…As reported earlier, boehmite has a low efficiency in the epoxidation of alkenes . However, its surface is covered with hydroxyl groups, which are ready for further functionalization and supporting metal complexes . The presence of metal complexes is vital for the catalytic epoxidation of alkenes because the oxidant could coordinate to these sites and become activated for an epoxidation process.…”

Section: Resultsmentioning

confidence: 89%

“…The IR spectrum for Fe@B‐Cl (Figure f) shows a new band for the C‐H stretching vibration of grafted silyl propyl chloride groups at 2931 cm −1 , in addition to the characteristic Fe@B bands . The C‐Cl vibration of grafted groups should be shown at 600–650 cm −1 but it is probably covered by the characteristic vibration of boehmite in this region.…”

Section: Resultsmentioning

confidence: 97%

“…In continuation of our studies on the catalytic epoxidation of alkenes using chemically grafted vanadium‐ and molybdenum‐containing catalysts on the surface of boehmite nanoparticles, in this work, we tried to prepare a magnetite core‐boehmite shell, as a catalytic support that could easily be separated from the reaction medium by the use of a simple magnet. This was done by adding the pre‐treated magnetite nanoparticles to the aluminum alkoxide precursor solution in the formerly reported hydrothermal‐assisted sol–gel process for the production of boehmite nanoparticles .…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of Fe₃O₄@Boehmite core‐shell nanoparticles to support molybdenum or vanadium complexes for catalytic epoxidation of alkenes

Mirzaee

Bahramian

Gholampour

et al. 2019

Applied Organom Chemis

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Fe3O4 core nanoparticles were prepared via a solvothermal process, and then they were covered with a surface hydroxyl‐rich boehmite shell via the hydrothermal‐assisted sol–gel processing of aluminum 2‐propoxide. The outer surface of the boehmite shell was subsequently covalently functionalized with 3‐(tri‐methoxysilyl)‐propylamine or 3‐(tri‐methoxysilyl)‐propyl chloride, and the terminal chlorine groups were treated with imidazole. These compounds were used to support the hexa‐carbonyl molybdenum and oxo‐sulfato vanadium (IV) complexes. The supported catalysts were characterized by the FT‐IR, CHN, ICP, and TEM analysis techniques. They were then used in the epoxidation of cis‐cyclooctene. The catalytic procedures were optimized for different parameters such as the solvent, oxidant, and temperature. The reaction progress was investigated by the gas–liquid chromatography analysis. The catalysts used were simply recovered from the solution by applying a magnet, and recycling the experiments revealed that the heterogeneous nanocatalysts could be repeatedly used for the epoxidation of cis‐cyclooctene. The optimized conditions were also successfully used for the epoxidation of some other alkenes.

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Synthesis, characterization, density functional theory studies and antibacterial activity of a new Schiff base dioxomolybdenum(VI) complex with tryptophan as epoxidation catalyst

Asgharpour

Farzaneh

Ghiasi

et al. 2017

Applied Organom Chemis

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A cis-dioxomolybdenum(VI) complex was prepared with MoO 2 (acac) 2 and a Schiff base ligand (2-((2-hydroxybenzylidene)amino)-3-(1H-indol-3-yl)propanoic acid) derived from salicylaldehyde and L-tryptophan in ethanol and designated as [MoO 2 (Sal-Tryp)(EtOH)]. It was characterized using several techniques including thermogravimetric and elemental analyses and mass, Fourier transform infrared and UV-visible spectroscopies. Theoretical calculations were performed using density functional theory for studying the molecular structure. An in vitro antibacterial activity evaluation showed that [MoO 2 (Sal-Tryp)EtOH] complex exhibits good inhibitory effects against Gram-positive (Bacillus subtilis, Staphylococcus aureus) and Gram-negative (Escherichia coli, Pseudomonas aeruginosa) bacteria in comparison to standard antibacterial drugs. It was also found that [MoO 2 (Sal-Tryp) EtOH] complex successfully catalyses the epoxidation of cyclooctene, norbornene, cyclohexene, styrene, α-methylstyrene and trans-stilbene, with 45-100% conversions and 64-100% selectivities. Based on the obtained results, the heterogeneity and reusability of the catalyst seem promising.

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Acetylacetonate complexes of vanadium and molybdenum supported on functionalized boehmite nano-particles for the catalytic epoxidation of alkenes

Cited by 57 publications

References 37 publications

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Preparation and characterization of Fe₃O₄@Boehmite core‐shell nanoparticles to support molybdenum or vanadium complexes for catalytic epoxidation of alkenes

Synthesis, characterization, density functional theory studies and antibacterial activity of a new Schiff base dioxomolybdenum(VI) complex with tryptophan as epoxidation catalyst

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Acetylacetonate complexes of vanadium and molybdenum supported on functionalized boehmite nano-particles for the catalytic epoxidation of alkenes

Cited by 57 publications

References 37 publications

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Preparation and characterization of Fe3O4@Boehmite core‐shell nanoparticles to support molybdenum or vanadium complexes for catalytic epoxidation of alkenes

Synthesis, characterization, density functional theory studies and antibacterial activity of a new Schiff base dioxomolybdenum(VI) complex with tryptophan as epoxidation catalyst

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Preparation and characterization of Fe₃O₄@Boehmite core‐shell nanoparticles to support molybdenum or vanadium complexes for catalytic epoxidation of alkenes