Aminoiron(III)–porphyrin–alumina catalyst obtained by non-hydrolytic sol-gel process for heterogeneous oxidation of hydrocarbons

Saltarelli, Michelle; Faria, Emerson H. de; Ciuffi, Kátia J.; Nassar, Eduardo J.; Trujillano, Raquel; Rives, V.; Vicente, Miguel Á.

doi:10.1016/j.mcat.2018.09.014

Cited by 25 publications

(7 citation statements)

References 73 publications

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“…However, the AlPO 4 sample underwent successive mass losses from the onset of heating at 25 • C until 200 • C, assigned to volatile solvents employed on washing steps and adsorbed water that remained in the product. A similar phenomenon has already been verified for alumina matrices prepared via the same route, and it was attributed to the contact of the material with the room atmosphere after the synthetic procedure [19,31].…”

Section: Resultssupporting

confidence: 75%

Photodegradation of Fipronil by Zn-AlPO4 Materials Synthesized by Non-Hydrolytic Sol–Gel Method

et al. 2022

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In recent decades, the increasing use of pesticides to improve food productivity has led to the release of effluents that contaminate the environment. To prepare a material that may help to treat effluents generated during agricultural practice, we used a new method based on the non-hydrolytic sol-gel route to obtain zinc photocatalysts in aluminophosphate matrixes. IR spectroscopy, X-ray diffraction, thermal analysis, differential scanning electron microscopy, energy dispersion spectroscopy, and specific surface area and pore volume determined from the nitrogen adsorbed were used to characterize materials treated at different temperatures. X-ray analysis showed how heat-treatment affected the structure of the material: Zn-AlPO4 in the trigonal and orthorhombic phase was obtained at 750 and 1000 °C, respectively. These phases directly influenced the ability of the material to generate OH radicals. The capacity of the materials to treat effluents was tested in the photodegradation of the pesticide Fipronil. The photocatalytic reactions were monitored by ultraviolet-visible spectroscopy and gas chromatography-mass spectrometry analyses. Zn-AlPO4 treated at 750 °C showed better photodegradation results--it removed 80% of the pesticide in 2 h when higher mass (150 mg) was tested. Long-time treatment of the effluent with Zn-AlPO4 treated at 750 °C completely photodegraded Fipronil. GC-MS analysis confirmed the photodegration profile, and only traces of Fipronil were observed after photocatalytic reaction for 120 min in the presence of Zn-AlPO4 treated at 750 °C under UV radiation.

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Section: Resultssupporting

confidence: 75%

Photodegradation of Fipronil by Zn-AlPO4 Materials Synthesized by Non-Hydrolytic Sol–Gel Method

et al. 2022

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“…[ 12 ] From this work, several metalloporphyrin catalysts were designed and applied to the oxidation of different organic substrates. [ 13–17 ]…”

Section: Inroductionmentioning

confidence: 99%

“…[12] From this work, several metalloporphyrin catalysts were designed and applied to the oxidation of different organic substrates. [13][14][15][16][17] In 1992, Meunier [18] proposed a classification for the synthetic metalloporphyrins (MP) based on the catalytic activity of these complexes. In this way, the MP complexes with simple structures, such as tetraphenylporphyrin (TPP), were classified as first-generation catalysts.…”

Section: Inroductionmentioning

confidence: 99%

Exploring manganese pyridylporphyrin isomers for cyclohexane oxidation: First‐generation catalysts are better than third‐generation ones

Meireles

Guimarães

Querino

et al. 2021

Applied Organom Chemis

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Manganese porphyrins are widely studied as catalysts for oxidation reactions of different organic substrates. In this work, we evaluate the catalytic activity of manganese complexes derived from meso-tetrakis(2-, 3-, or 4-pyridyl) porphyrin isomers, [Mn(TXPyP)]Cl (X = 2, 3, or 4), and the respective β-octabrominated counter-parts, [Mn(Br 8 TXPyP)], for oxidation of cyclohexane by PhI(OAc) 2 . At first, we describe the synthesis and characterization of a new third-generation manganese porphyrin, [Mn(Br 8 T4PyP)]. It presented a more positive value of half-wave potential (À0.287 V vs. Fc + /Fc) and a lower solubility in organic solvents among the isomers. In general, the third-generation catalysts [Mn(Br 8 TXPyP)] showed lower catalytic activity than those of the first-generation [Mn(TXPyP)]Cl in all systems studied. In addition, the use of water or imidazole as cocatalysts did not increase the yield or selectivity of the systems. Finally, when evaluating the use of the classic oxidant PhIO, there was a decrease in yield for all systems, indicating that PhI(OAc) 2 is a good substitute for this oxidant in catalytic systems.

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“…Baeyer–Villiger (B–V) oxidation is a significant organic reaction for converting ketones to the corresponding lactones or esters, which are indispensable intermediates for the synthesis of antibiotics, steroids, pheromones, and other fine chemicals in laboratory and industrial chemistry. , In the traditional stage of B–V oxidation, the mainly used oxidants are peracids, such as persulfuric acid, perbenzoic acid, m -chloroperbenzoic acid ( m -CPBA), and peroxide (H 2 O 2 ). , However, peracids are usually expensive, dangerous, and difficult to transport and store. High concentration of hydrogen peroxide has a good oxidation effect on the B–V reaction, but the water produced by the reaction is prone to hydrolyze lactones, and high concentration has a higher risk in industrial production. , Based on the above-mentioned factors, the harmfulness and high economic cost of peroxide limit its practical application. Another strategy uses aldehydes and molecular oxygen as green oxidants, known as the Mukaiyama method .…”

Section: Introductionmentioning

confidence: 99%

“…High concentration of hydrogen peroxide has a good oxidation effect on the B−V reaction, but the water produced by the reaction is prone to hydrolyze lactones, and high concentration has a higher risk in industrial production. 6,7 Based on the above-mentioned factors, the harmfulness and high economic cost of peroxide limit its practical application. Another strategy uses aldehydes and molecular oxygen as green oxidants, known as the Mukaiyama method.…”

Section: ■ Introductionmentioning

confidence: 99%

Cobalt-Tetraamide-Phthalocyanine Immobilized on Fe₃O₄/Chitosan Microspheres as an Efficient Catalyst for Baeyer–Villiger Oxidation

Tang

Jin

et al. 2020

ACS Omega

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Cobalt-Tetraamide-Phthalocyanine (CoTaPc) immobilized onto magnetic Fe 3 O 4 chitosan microspheres (Fe 3 O 4 / CTO) was synthesized via a simple immersion method, which is an efficient catalyst for the oxidation of cyclic ketones to lactones with O 2 /benzaldehyde as the oxidant. The CoTaPc-Fe 3 O 4 /CTO catalyst was applied for the first time in the Baeyer−Villiger (B− V) oxidation reaction. Characterization results obtained from X-ray diffraction, UV−vis, Fourier transform infrared, and scanning electron microscopy showed that the combination of CoTaPc and magnetic Fe 3 O 4 /CTO microspheres was achieved. The catalyst could be easily separated from the reaction system with an external magnet and reused several times without the remarkable loss of activity. In addition, a possible radical mechanism for the B−V oxidation in this catalytic system is proposed and verified by controlled experiments.

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Aminoiron(III)–porphyrin–alumina catalyst obtained by non-hydrolytic sol-gel process for heterogeneous oxidation of hydrocarbons

Cited by 25 publications

References 73 publications

Photodegradation of Fipronil by Zn-AlPO4 Materials Synthesized by Non-Hydrolytic Sol–Gel Method

Photodegradation of Fipronil by Zn-AlPO4 Materials Synthesized by Non-Hydrolytic Sol–Gel Method

Exploring manganese pyridylporphyrin isomers for cyclohexane oxidation: First‐generation catalysts are better than third‐generation ones

Cobalt-Tetraamide-Phthalocyanine Immobilized on Fe₃O₄/Chitosan Microspheres as an Efficient Catalyst for Baeyer–Villiger Oxidation

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Aminoiron(III)–porphyrin–alumina catalyst obtained by non-hydrolytic sol-gel process for heterogeneous oxidation of hydrocarbons

Cited by 25 publications

References 73 publications

Photodegradation of Fipronil by Zn-AlPO4 Materials Synthesized by Non-Hydrolytic Sol–Gel Method

Photodegradation of Fipronil by Zn-AlPO4 Materials Synthesized by Non-Hydrolytic Sol–Gel Method

Exploring manganese pyridylporphyrin isomers for cyclohexane oxidation: First‐generation catalysts are better than third‐generation ones

Cobalt-Tetraamide-Phthalocyanine Immobilized on Fe3O4/Chitosan Microspheres as an Efficient Catalyst for Baeyer–Villiger Oxidation

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Product

Resources

About

Cobalt-Tetraamide-Phthalocyanine Immobilized on Fe₃O₄/Chitosan Microspheres as an Efficient Catalyst for Baeyer–Villiger Oxidation