Highly active InOx/TUD-1 catalyst towards Baeyer–Villiger oxidation of cyclohexanone using molecular oxygen and benzaldehyde

Kumar, Rawesh; Das, Prangya Paramita; Al‐Fatesh, Ahmed S.; Fakeeha, Anis H.; Pandey, Jai Krishna; Chowdhury, Biswajit

doi:10.1016/j.catcom.2015.11.007

Cited by 18 publications

(4 citation statements)

References 22 publications

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“…The TUD-1 mesoporous material, with its uniform pore system and interconnectivity pores, offers excellent accessibility for reactants and products to reach or leave the Au 0 active sites which makes the reaction proceed faster than for other mesoporous materials. Few studies were also reported to show the advantages of using TUD-1 as a support for different active sites, such as copper in phenol hydroxylation [ 56 ], vanadium in the epoxidation of trans-stilbene [ 57 ] and indium in Baeyer–Villiger oxidation [ 58 ]. Therefore, Au-TUD-1 was considered a promising catalyst for CO oxidation, and further developments were carried out to reach the conversion temperature below the room temperature and to compare it with other Au catalysts [ 59 , 60 ], which will be reported shortly.…”

Section: Resultsmentioning

confidence: 99%

Noble Metal Nanoparticles Incorporated Siliceous TUD-1 Mesoporous Nano-Catalyst for Low-Temperature Oxidation of Carbon Monoxide

et al. 2020

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This report, for the first time, demonstrated the low-temperature oxidation of carbon monoxide (CO) using nano-catalysts consisting of noble metal nanoparticles incorporated in TUD-1 mesoporous silica nano-structures synthesized via a one-pot surfactant-free sol–gel synthesis methodology. Herein, we investigated a nano-catalyst, represented as M-TUD-1 (M = Rh, Pd, Pt and Au), which was prepared using a constant Si/M ratio of 100. The outcome of the analytical studies confirmed the formation of a nano-catalyst ranging from 5 to 10 nm wherein noble metal nanoparticles were distributed uniformly onto the mesopores of TUD-1. The catalytic performance of M-TUD-1 catalysts was examined in the environmentally impacted CO oxidation reaction to CO2. The catalytic performance of Au-TUD-1 benchmarked other M-TUD-1 catalysts and a total conversion of CO was obtained at 303 K. The activity of the other nano-catalysts was obtained as Pt-TUD-1 > Pd-TUD-1 > Rh-TUD-1, with a total CO conversion at temperatures of 308, 328 and 348 K, respectively. The Au-TUD-1 exhibited a high stability and reusability as indicated by the observed high activity after ten continuous runs without any treatment. The outcomes of this research suggested that M-TUD-1 are promising nano-catalysts for the removal of the toxic CO gas and can also potentially be useful to protect the environment where a long-life time, cost-effectiveness and industrial scaling-up are the key approaches.

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Section: Resultsmentioning

confidence: 99%

Noble Metal Nanoparticles Incorporated Siliceous TUD-1 Mesoporous Nano-Catalyst for Low-Temperature Oxidation of Carbon Monoxide

et al. 2020

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“…Several indium based catalyst has been reported in the literature for benzoylation [15,16,17], acylation of aromatic compound [18], hydrogenation of crotonaldehyde [19], Meerwein-Ponndorf-Verley (MPV) reduction [20] and photocatalyis [21]. In earlier studies, we have found O 2 polarizing ability of indium oxide stabilized on silica surface resulting styrene oxidation [22] and bayer villager oxidation [23]. By prompted from vibrant catalytic property, higher aerial stability and low toxicity of indium, we have synthesized In-SBA-15 and employed it for vapor phase Beckmann rearrangement reaction in anhydrous high temperature conditions.…”

Section: Introductionmentioning

confidence: 88%

Highly stable In-SBA-15 catalyst for vapor phase Beckmann rearrangement reaction

Kumar

Shah

Bahadur³

et al. 2016

Microporous and Mesoporous Materials

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The Indium doped SBA-15 material was prepared by sol-gel method and tested for vapor phase Beckman rearrangement reaction. Among three indium loading, In/Si ratio of 2/100 was found as an optimum composition in terms of caprolactam selectivity (100%) and cyclohexanone oxime conversion (100%). The catalysts were characterized by N 2 adsorption, small-angle Xrays/neutron scattering (SAXS/SANS), XRD, FESEM, HRTEM, EDX, UV, FTIR and NH 3-TPD techniques. In-situ SANS experiment was performed on the adsorption of CO 2 to detect the micropores in the mesopore wall. All catalysts samples have highly ordered hexagonal structure with well dispersed indium in the silica matrix. The fine tuning of weak and strong acid sites were found in indium doped SBA-15 (In/Si = 2/100) catalyst. The same catalyst showed optimum catalytic performance, high space time yield 114.4 mol/h/g cat and high stability till 6 h of reaction without deactivation. The micro-kinetic analysis showed that there were no external and internal diffusion limitations in the SBA-15 catalyst. The reaction mechanism of Beckmann rearrangement over In-SBA-15 has been elucidated.

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“…When oxygen and co‐oxidant aldehydes are used together (Mukaiyama condition [11] ), ketones can be oxidized into esters, while ketones need to be combined with high efficiency catalysts to obtain high yield compounds. So far, a large number of aerobic B−V oxidation catalysts such as SnO 2 , [8c,12] Fe 3 O 4 , [13] Cu(OAc) 2 , [14] zeolite, [7a] NHPI, [15] Cu‐MCM‐41, [16] InOx/ TUD‐1 [17] and Cu II −Sn IV @MIL‐101(Cr) [18] have been reported.…”

Section: Introductionmentioning

confidence: 99%

Aerobic Baeyer‐Villiger Oxidation Catalyzed by Metal Corroles

Wan

Yang

et al. 2022

Eur J Org Chem

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Metal corrole catalyzed Baeyer-Villiger oxidation reaction was successfully achieved for the first time. Among all tested Co, Mn, Fe and Cu complexes of 5, 10, 15-Tris (pentafluorophenyl) corrole, Fe complex [Fe(tpfc)Cl] exhibited the best activity, and the highest yield was observed for six membered cyclic ketones. Preliminary results suggest that Fe(tpfc)Cl may act as an initiator for dehydrogenation of benzaldehyde to generate benzoyl radical, which will form peroxybenzoic acid under molecular oxygen atmosphere. The oxidation of Fe(tpfc)Cl catalyst by peroxybenzoic acid produces high-valent iron-oxo corrole intermediate. The iron-oxo corrole is attacked by cyclohexanone to form a Criegee adduct, which will finally generate ɛcaprolactone product to finish the catalytic cycle. The 4 A-MS additive may accelerate the production of perbenzoic acid and significantly improve the reaction yield.[a] M.

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Highly active InOx/TUD-1 catalyst towards Baeyer–Villiger oxidation of cyclohexanone using molecular oxygen and benzaldehyde

Cited by 18 publications

References 22 publications

Noble Metal Nanoparticles Incorporated Siliceous TUD-1 Mesoporous Nano-Catalyst for Low-Temperature Oxidation of Carbon Monoxide

Noble Metal Nanoparticles Incorporated Siliceous TUD-1 Mesoporous Nano-Catalyst for Low-Temperature Oxidation of Carbon Monoxide

Highly stable In-SBA-15 catalyst for vapor phase Beckmann rearrangement reaction

Aerobic Baeyer‐Villiger Oxidation Catalyzed by Metal Corroles

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