Host (nanocavity of dealuminated zeolite Y)–guest (12-molybdophosphoric acid) nanocomposite material: An efficient and reusable catalyst for oximation of aldehydes

Tangestaninejad, Shahram; Mirkhani, Valiollah; Mohammadpoor‐Baltork, Iraj; Moosavifar, Maryam

doi:10.1016/j.apcata.2009.02.008

Cited by 26 publications

(27 citation statements)

References 32 publications

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“…The synthesis of such a species has been reported recently [57]. Due to the great size of the molecules, polyacids encapsulated in Y zeolite such as those described in [20,22,23] were inactive for this reaction. The same authors also studied the synthesis of fructone-B by acetalization of ethylacetoacetate with 1,2-propanediol and observed similar results, the Cs salts being active with minimal leaching [54].…”

Section: Scheme 5 Esterification Of Oleic Acid By Methanolmentioning

confidence: 99%

“…The synthesis of such a species has been reported recently [57]. Due to the great size of the molecules, polyacids encapsulated in Y zeolite such as those described in [20,22,23] were inactive for this reaction. More recently, Narkhede and Patel studied this reaction over HPW12 and HSiW12 supported on Hβ zeolite [58].…”

Section: Scheme 5 Esterification Of Oleic Acid By Methanolmentioning

confidence: 99%

“…Moghadam et al used the method proposed by Mukai et al for the synthesis of HPMo12 encapsulated in US-Y (Si/Al = 3.8) and its use for the oximation of aldehydes [20]. After synthesis and washing with hot water, the remaining protons of the zeolite were exchanged for Na + by suspending the solid in a solution of sodium chloride for 4 h. The catalyst, which contained 5.0 wt % Mo, was characterized by infrared spectroscopy (which showed the characteristic bands of the polyoxometalate but slightly shifted), X-ray powder diffraction and BET surface area analysis.…”

Section: Applications In Catalysismentioning

confidence: 99%

“…This material was used for the oximation of various aldehydes with NH 2 OH¨HCl (Scheme 1) [20]. The reaction was performed under mechanical stirring, ultrasonic irradiation or without any solvent.…”

Section: Applications In Catalysismentioning

confidence: 99%

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Synthesis, Characterization and Applications in Catalysis of Polyoxometalate/Zeolite Composites

Lefèbvre

2016

Inorganics

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An overview of the synthesis, characterization and catalytic applications of polyoxometalates/zeolites composites is given. The solids obtained by direct synthesis of the polyoxometalate in the presence of the zeolite are first described with their applications in catalysis. Those obtained by a direct mixing of the two components are then reviewed. In all cases, special care is taken in the localization of the polyoxometalate, inside the zeolite crystal, in mesopores or at the external surface of the crystals, as deduced from the characterization methods.

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Section: Scheme 5 Esterification Of Oleic Acid By Methanolmentioning

confidence: 99%

“…The synthesis of such a species has been reported recently [57]. Due to the great size of the molecules, polyacids encapsulated in Y zeolite such as those described in [20,22,23] were inactive for this reaction. More recently, Narkhede and Patel studied this reaction over HPW12 and HSiW12 supported on Hβ zeolite [58].…”

Section: Scheme 5 Esterification Of Oleic Acid By Methanolmentioning

confidence: 99%

Section: Applications In Catalysismentioning

confidence: 99%

Section: Applications In Catalysismentioning

confidence: 99%

See 2 more Smart Citations

Synthesis, Characterization and Applications in Catalysis of Polyoxometalate/Zeolite Composites

Lefèbvre

2016

Inorganics

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“…It can be overcome by immobilising metalloporphyrins to insoluble solid supports. Oxides [4][5][6] or organic polymers [7][8][9][10][11] in recent years have been carried out in order to obtain epoxidation systems and mimic the action of hemeenzymes such as peroxidases 12 and cytochrome P-450 [13][14][15] because of the support environment. Metalloporphyrin-immobilized molecular sieve presents many advantages such as replacement of molecular sieve as the protein portion of natural enzymes, providing a controlled steric environment for metalloporphyrins and serving as a model for the active site of cytochrome P-450.…”

Section: Introductionmentioning

confidence: 99%

Surface-functionalized Hexagonal Mesoporous Silica Supported 5-(4-Carboxyphenyl)-10,15,20-triphenyl Porphyrin Manganese(III) Chloride and Their Catalytic Activity

Zhang¹,

Jiang

Zhang³

et al. 2012

Bulletin of the Korean Chemical Society

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Manganese(III) 5-(4-carboxyphenyl)-10,15,20-triphenyl porphyrin chloride (Mn(TCPP)Cl) was grafted through amide bond on silica zeolite Y (HY), zeolite beta (Hβ) and hexagonal mesoporous silica (HMS). XRD, ICP-AES, N 2 physisorption, SEM, TEM, FTIR and thermal analysis were employed to analyse these novel heterogeneous materials. These silica supported catalysts were shown to be used for epoxidation and good shape selectivity was observed. The effect of support structure on catalytic performance was also discussed. The catalytic activity remained when the catalysts were recycled five times. The energy changes about epoxidation of alkenes by NaIO 4 and H 2 O 2 were also computationally calculated to explain the different catalytic efficiency.

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Copper (II) and Palladium (II) Schiff‐Base Complexes as Homogeneous and Heterogeneous Catalyst for Efficient α‐Methyl Oxidation Reaction: Experimental and DFT Approaches

et al. 2021

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New homogenous catalysts of Schiff base/M(II), (M(II) = Cu, Pd), and new heterogeneous catalysts [graphene oxide (GO)/3chlorotrimethoxisilane (CPS) /Schiff base/M(II)] has been successfully synthesized. The heterogenous catalysts were synthesized using 3-chlorotrimethoxisilane (CPS) via covalent bonding on graphene oxide and were characterized using fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive xray spectroscopy(EDS) techniques. Schiff base/M(II) and GO/ CPS/Schiff base/M(II) were used as homogenous and heterogeneous catalysts in the oxidation of alkens. Catalytic results showed all the prepared samples were active in the oxidation of α-methyl styrene. Over as-prepared heterogeneous catalysts, more than 99 % conversion and selectivity for acetophenone could be achieved using (tert-butyl hydroproxide (TBHP) : 22.5 mmol, Acetonitrile as solvent after 6 h).The recyclability experiment results indicated that heterogenous catalysts are excellent for α-methyl styrene conversion and acetophenone selectivity even after being used for four cycles. Moreover, the electronic structures and net atomic charges are interpreted by density functional theory (DFT) calculations. Running title: Copper (II) and palladium (II) Schiff base complexes for experimental and theory study [a]

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Host (nanocavity of dealuminated zeolite Y)–guest (12-molybdophosphoric acid) nanocomposite material: An efficient and reusable catalyst for oximation of aldehydes

Cited by 26 publications

References 32 publications

Synthesis, Characterization and Applications in Catalysis of Polyoxometalate/Zeolite Composites

Synthesis, Characterization and Applications in Catalysis of Polyoxometalate/Zeolite Composites

Surface-functionalized Hexagonal Mesoporous Silica Supported 5-(4-Carboxyphenyl)-10,15,20-triphenyl Porphyrin Manganese(III) Chloride and Their Catalytic Activity

Copper (II) and Palladium (II) Schiff‐Base Complexes as Homogeneous and Heterogeneous Catalyst for Efficient α‐Methyl Oxidation Reaction: Experimental and DFT Approaches

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