A Family of Microporous Materials Formed by Sn(IV) Phosphonate Nanoparticles

Subbiah, Ayyappan; Pyle, David M.; Rowland, Adam; Huang, Jin; Narayanan, Ramkrishnan; Thiyagarajan, P.; Zoń, Jerzy; Clearfield, Abraham

doi:10.1021/ja052472p

Cited by 79 publications

(55 citation statements)

References 15 publications

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“…To overcome this problem, a new family of porous and layered Sn(IV) phenylphosphonates (SnPP) with high surface areas and 1-2 nm in pore diameters were developed [138,139], and these materials have been found to be extremely active for BV reaction of aromatic aldehydes using 30% aqueous H2O2 solution. When the SnPP catalysts were used to catalyze the BV oxidation on 4-methoxybenzaldehyde, a maximum conversion rate of 88% was observed over Sn(IV)(O3PC6H4-C6H4PO3) (SnPP-A) [140].…”

Section: Polymer Based Sn Catalystsmentioning

confidence: 99%

Sn-based catalysts for Baeyer-Villiger oxidations by using hydrogen peroxide as oxidant

Cui

Shi

2016

Sci. China Mater.

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Baeyer-Villiger (BV) oxidation is one of the most important transformation reactions in synthetic organic chemistry. Catalytic versions of the BV oxidation are particularly attractive in practical applications, because the catalytic transformation substantially simplifies reaction process while minimizing reactant consumption as well as waste production. Further benefits are expected from replacing peracids, the traditionally used oxidant, by low cost and environmentally friendly hydrogen peroxide (H2O2). This review will first introduce very briefly the features of BV oxidation reactions, and the corresponding oxidants traditionally used. Afterwards, the emphasis will be placed on the specific Sn-based catalysts, their performance comparison for the BV oxidation reaction by using H2O2 as oxidant, and the catalytic mechanisms of most Sn-based catalysts reported so far, including homogeneous Sn-based catalysts (such as Sn-based fluorous biphase system catalysts), heterogeneous Sn-based catalysts (such as Sn-based zeolite catalysts, Sn-based mesoporous composites, Sn-incorporated clay catalysts, Sn-based metal oxide composites and polymer supported Sn catalysts). Finally, the Sn-based catalysts for BV oxidation are outlooked for their potentials and perspectives in enhancing the performance and then accelerating the practical applications of BV oxidations by using H2O2. The developing direction of the Sn-based catalytic BV reaction is also illustrated.

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Section: Polymer Based Sn Catalystsmentioning

confidence: 99%

Sn-based catalysts for Baeyer-Villiger oxidations by using hydrogen peroxide as oxidant

Cui

Shi

2016

Sci. China Mater.

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“…In addition, as opposed to silanes where Si-O-Si reactions can occur, phosphonates will not cause homo-condensations that has the advantage of increasing the grafting yield 197 . Alumina, tin oxide, zirconia and magnetite were also shown to be readily functionalized with phosphonate groups 6,214,[216][217][218] . In addition, due to larger steric hindrance effects, phosphonate groups may also form multiple anchorages onto metal oxide surfaces, further stabilizing the structure 219 .…”

Section: Phosphonatementioning

confidence: 99%

The fabrication and surface functionalization of porous metal frameworks – a review

Dumée

Bao

et al. 2013

J. Mater. Chem. A

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Porous metal frameworks offer potentially useful applications for the aerospace, automotive and bio-medical industries. They can be used as electrodes, actuators, or as selective membrane films. The versatility of the physical features (pore size, pore depth, overall porosity and pore surface coverage) as well as the large range of surface chemistries for both metal oxides and pure noble metals offers scope to functionalise metal nano-particles and networks of nano-porous metal structures. As well as traditional routes to producing metal structures, such as metal sintering or foaming, novel high-throughput techniques have recently been investigated. Nanoparticle self-assembly, metal ion reduction and deposition as well as metal alloy de-alloying were identified as sustainable routes to produce large surface areas of such nano-porous metal frameworks. The main limitations of the current fabrication techniques include the difficulty to process stable and homogeneous arrays of nano-scale pores and the control of their morphology due to the high reactivity of nano-structured metal structures. This paper aims at critically reviewing the various fabrication techniques and surface functionalization routes used to produce advanced functional porous metal frameworks. The limitations and advantages of the different fabrication techniques will be discussed in light of the final material properties and targeted applications. Keywordsporous metal frameworks; porous metal fabrication routes; metal surface chemistry; application of metal frameworks; 3

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“…Corma and his group have been designing Sn-b zeolite and Sn-MCM-41 heterogeneous catalysts for the reaction of aromatic aldehydes with hydrogen peroxide, in non-halogenated solvents such as dimethylformamide and dioxane [16][17][18][19], and they have suggested that these catalysts activates the carbonyl compounds instead of the hydrogen peroxide, making them more selective. A family of porous Sn(IV) phenylphosphonates with layered structures, high surface area and pore diameters in the 10-20 Å range, have also been synthesized [20,21] and were found to be extremely active in the oxidation of different aromatic aldehydes, using 30% aqueous hydrogen peroxide, particularly in the absence of any organic solvents [22].…”

Section: Introductionmentioning

confidence: 99%

Study of Selectivity of Metal Phosphates and Phosphonates in Baeyer–Villiger Oxidations

2010

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Layered materials including metal phosphates and phosphonates have been widely investigated in several fields acting as good selective catalysts in a great number of oxidative reactions. Zirconium phosphate amorphous [Zr(HPO 4 ) 2 ÁH 2 O; ZrPA], sodium exchanged zirconium phosphate amorphous [Zr(NaPO 4 ) 2 ; NaZrPA], potassium exchanged zirconium phosphate amorphous [Zr(KPO 4 ) 2 ; KZrPA], zirconium phenylphosphonate amorphous [Zr(O 3 PC 6 H 5 ) 2 ; ZrPPA], zirconium carboxyethylphosphonate [Zr(O 3 PCH 2 CH 2 COOH) 2 ; ZrCEP] and aluminium carboxyethylphosphonate [Al 3 (OH) 3 (O 3 PCH 2 CH 2 CO 2 ) 2 Á 3H 2 O; AlCEP] were prepared, characterized and evaluated as selective catalysts in the Baeyer-Villiger oxidation of cyclopentanone, p-methoxybenzaldehyde and 2,4,6-trimethylbenzaldehyde by hydrogen peroxide, in acetic acid. The selectivity of d-valerolactone, p-methoxyphenol and 2,4,6-trimethylphenol have been found to be strongly related with the properties and structure of each catalyst.

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A Family of Microporous Materials Formed by Sn(IV) Phosphonate Nanoparticles

Cited by 79 publications

References 15 publications

Sn-based catalysts for Baeyer-Villiger oxidations by using hydrogen peroxide as oxidant

Sn-based catalysts for Baeyer-Villiger oxidations by using hydrogen peroxide as oxidant

The fabrication and surface functionalization of porous metal frameworks – a review

Study of Selectivity of Metal Phosphates and Phosphonates in Baeyer–Villiger Oxidations

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