Green oxidation of sulfides in solvent-free condition by reusable novel Mo(VI) complex anchored on magnetite as a high-efficiency nanocatalyst with eco-friendly aqueous H2O2

Bezaatpour, Abolfazl; Askarizadeh, Elham; Akbarpour, Shadab; Amiria, Mandana; Babaei, Behnam

doi:10.1016/j.mcat.2017.04.021

Cited by 40 publications

(20 citation statements)

References 55 publications

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“…[1][2][3] Molybdenum(VI) Schiff base complexes have significant advantages such as stability, economy, commercial availability and environmental friendliness in epoxidation of olefins compounds. [4][5][6][7] tert-Butyl hydroperoxide (TBHP)…”

Section: Introductionmentioning

confidence: 99%

Excellent alkene epoxidation catalytic activity of macrocyclic‐based complex of dioxo‐Mo(VI) on supermagnetic separable nanocatalyst

Payami

Bezaatpour

Eskandari

2017

Applied Organom Chemis

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A phenoxybutane-based Schiff base complex of cis-dioxo-Mo(VI) was supported on paramagnetic nanoparticles and characterized using powder Xray diffraction, infrared, diffuse reflectance and atomic absorption spectroscopies, scanning and transmission electron microscopies and vibrating sample magnetometry. The separable nanocatalyst was tested for the selective epoxidation of cyclohexene, cyclooctene, styrene, indene, α-pinene, 1-octene, 1-heptene, 1-dodecene and trans-stilbene using tert-butyl hydroperoxide (80% in di-tert-butyl peroxide-water, 3:2) as oxidant in chloroform. The catalyst was efficient for oxidation of cyclooctene with 100% selectivity for epoxidation with 98% conversion in 10 min. We were able to separate magnetically the nanocatalyst using an external magnetic field and used the catalyst at least six successive times without significant decrease in conversion.The turnover frequency of the catalyst was remarkable (2556 h −1 for cyclooctene). The proposed nanomagnetic catalyst has advantages in terms of catalytic activity, selectivity, catalytic reaction time and reusability by easy separation.

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Section: Introductionmentioning

confidence: 99%

Excellent alkene epoxidation catalytic activity of macrocyclic‐based complex of dioxo‐Mo(VI) on supermagnetic separable nanocatalyst

Payami

Bezaatpour

Eskandari

2017

Applied Organom Chemis

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“…It seems that, S atom of sulfide attacks to O−O sigma antibonding orbital. Finally, the catalyst is regenerated with production of sulfoxide …”

Section: Resultsmentioning

confidence: 99%

“…According to our previous works on the catalytic activity of d‐block Schiff base complexes, a MnFe] 2 O 4 supported Mo(VI) Schiff base complex, MnFe 2 O 4 ‐Mo(VI), derived from 1,3‐bis(4‐bromo‐2‐carboxyaldehyde phenoxy)propane has been developed in the presented work (Figure ). The novel heterogeneous catalyst was tested for its ability to oxidize olefins and sulfides selectively into epoxides and sulfoxides in green solvent‐less condition.…”

Section: Introductionmentioning

confidence: 99%

Manganese Ferrite Nanoparticles Modified by Mo(VI) Complex: Highly Efficient Catalyst for Sulfides and Olefins Oxidation Under Solvent‐less Condition

et al. 2019

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In this research work, we report a new Mo(VI) Schiff base complex based on 1,3‐bis(4‐bromo‐2‐carboxyaldehyde phenoxy)propane, which was immobilized covalently on MnFe2O4 magnetic nanoparticles. The efficiency of the novel catalyst was investigated for the oxidation of olefins and organic sulfides. Under optimized conditions, the nanoparticle catalyst allowed selective epoxidation of cis‐cyclooctene, cyclohexene, and cis‐cyclodecane with 99% conversion in 10 min under solvent‐free condition with tert‐butyl hydroperoxide as oxidant. The catalyst also showed excellent ability for the oxidation of thioanisole, dimethyl sulfide and benzyl phenyl sulfide with a 99% conversion in 5 min and solvent‐less condition with H2O2 (30%) as oxidant. The recyclability of catalyst was also investigated in the oxidation of cyclooctene and methyl phenyl sulfide at least for 5 times.

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“…The use of environmental friendly and green synthetic protocols for the transformations of organic pollutants at ambient temperature has been largely looked after in recent years . The concept of green chemistry globally acclaims the design of energy efficient chemical transformation concepts that require little energy to carry out a specific reaction with optimum productivity.…”

Section: Introductionmentioning

confidence: 99%

Excellent photocatalytic reduction of nitroarenes to aminoarenes by BiVO₄ nanoparticles grafted on reduced graphene oxide (rGO/BiVO₄)

Azad

Bezaatpour

Amiri

et al. 2019

Applied Organom Chemis

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A novel heterogeneous composite material based on reduced graphene oxide (rGO) and bismuth vanadate (BiVO4) was prepared and characterized by various techniques such as powder XRD, HRTEM, EADX, UV–Vis‐DRS, FT‐IR, Raman, BET and XPS analyses. The characterization results reveal that the rGO well decorated by BiVO4. The electrochemical impedance spectroscopy (EIS) shows the increasing of charge transfer of rGO/BiVO4 in presence of light irradiation. In this research, the pure BiVO4 and rGO/BiVO4 composite have been explored for photocatalytic reduction of nitroarenes. Among the prepared nanocomposites, rGO loaded with 10% BiVO4 catalyst (noted as rGO/BiVO4–10%) shows the best performance for the photo‐reduction of various nitroaromatic molecules to their corresponding amine compounds under visible‐light irradiation at room temperature. The catalyst exhibited in particular excellent photocatalytic activity for the conversion of 1,4‐dinitrobenzene to 4‐nitroanilline (100% conversion) in 20 min, 4‐chloronitrobenzene to 4‐chloroaniline and 2‐nitrophenol to 2‐aminophenol (100% conversion) in only 30 min. In addition, the conversion of 4‐bromonitrobenzene, 4‐iodonitrobenzene to their corresponding amine compounds (100% conversion) was achieved in 60 min. The catalyst was recovered for several times and reused without decreasing of its efficiency.

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Green oxidation of sulfides in solvent-free condition by reusable novel Mo(VI) complex anchored on magnetite as a high-efficiency nanocatalyst with eco-friendly aqueous H2O2

Cited by 40 publications

References 55 publications

Excellent alkene epoxidation catalytic activity of macrocyclic‐based complex of dioxo‐Mo(VI) on supermagnetic separable nanocatalyst

Excellent alkene epoxidation catalytic activity of macrocyclic‐based complex of dioxo‐Mo(VI) on supermagnetic separable nanocatalyst

Manganese Ferrite Nanoparticles Modified by Mo(VI) Complex: Highly Efficient Catalyst for Sulfides and Olefins Oxidation Under Solvent‐less Condition

Excellent photocatalytic reduction of nitroarenes to aminoarenes by BiVO₄ nanoparticles grafted on reduced graphene oxide (rGO/BiVO₄)

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Green oxidation of sulfides in solvent-free condition by reusable novel Mo(VI) complex anchored on magnetite as a high-efficiency nanocatalyst with eco-friendly aqueous H2O2

Cited by 40 publications

References 55 publications

Excellent alkene epoxidation catalytic activity of macrocyclic‐based complex of dioxo‐Mo(VI) on supermagnetic separable nanocatalyst

Excellent alkene epoxidation catalytic activity of macrocyclic‐based complex of dioxo‐Mo(VI) on supermagnetic separable nanocatalyst

Manganese Ferrite Nanoparticles Modified by Mo(VI) Complex: Highly Efficient Catalyst for Sulfides and Olefins Oxidation Under Solvent‐less Condition

Excellent photocatalytic reduction of nitroarenes to aminoarenes by BiVO4 nanoparticles grafted on reduced graphene oxide (rGO/BiVO4)

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Excellent photocatalytic reduction of nitroarenes to aminoarenes by BiVO₄ nanoparticles grafted on reduced graphene oxide (rGO/BiVO₄)