Merging periodic mesoporous organosilica (PMO) with mesoporous aluminosilica (Al/Si-PMO): A catalyst for green oxidation

Doustkhah, Esmail; Mohtasham, Hamed; Hasani, Morteza; Ide, Yusuke; Rostamnia, Sadegh; Tsunoji, Nao; Assadi, M. Hussein N.

doi:10.1016/j.mcat.2019.110676

Cited by 39 publications

(16 citation statements)

References 45 publications

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“…Furthermore, MNPs enhance the reaction rates by local heating through induction as well as providing appropriate surface area. Also, they show synergistic effects in combination to other catalytic species or centers, due to the catalytic performance of magnetic materials, including Fe, Ni, or Co-based ones 27,[48][49][50][51][52][53][54] . Therefore, the synergistic effects of both PMO-based organosilicas and magnetic components for designing and application of new materials would be very desirable.…”

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confidence: 99%

Novel magnetic propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) as a highly efficient and reusable nanoreactor for the sustainable synthesis of imidazopyrimidine derivatives

Akbari

Dekamin

Yaghoubi

et al. 2020

Sci Rep

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in this study, preparation and characterization of a new magnetic propylsulfonic acid-anchored isocyanurate bridging periodic mesoporous organosilica (iron oxide@pMo-icS-prSo 3 H) is described. the iron oxide@pMo-icS-prSo 3 H nanomaterials were characterized by fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy and field emission scanning electron microscopy as well as thermogravimetric analysis, n 2 adsorption-desorption isotherms and vibrating sample magnetometer techniques. Indeed, the new obtained materials are the first example of the magnetic thermally stable isocyanurate-based mesoporous organosilica solid acid. furthermore, the catalytic activity of the iron oxide@pMo-icS-prSo 3 H nanomaterials, as a novel and highly efficient recoverable nanoreactor, was investigated for the sustainable heteroannulation synthesis of imidazopyrimidine derivatives through the Traube-Schwarz multicomponent reaction of 2-aminobenzoimidazole, c-H acids and diverse aromatic aldehydes. the advantages of this green protocol are low catalyst loading, high to quantitative yields, short reaction times and the catalyst recyclability for at least four consecutive runs. The use of heterogeneous catalysts has been developed because of their desirable properties and addressing many principles of green chemistry. Therefore, development and research in the heterogeneous catalysts has received major consideration due to disadvantages associated with homogeneous catalysts such as catalyst recovery, product separation, corrosion problems and environmental hazards 1-5. Along these lines, development of nanoporous materials with significant improved properties is a new and growing research field in the recent years 6-10. Highlyordered periodic mesoporous organosilicas (PMOs) materials, as a kind of inorganic-organic hybrid mesoporous materials, have attracted significant interest because of their noteworthy properties such as high surface area, narrow pore size distribution, adjustable mesopore diameter, high mechanical and hydrothermal stability, and highly tunable physicochemical properties by varying the nature and extent of the surface functionalization. PMOs which are mainly prepared from bridged organosilane precursors [(R′O) 3 SiR -Si(OR′) 3 ; R: organic bridging group, R′: methyl or ethyl] have found vast applications in various fields such as drug delivery systems, absorption and storage of mechanical energy, gas storage, electronics, sensors, luminescence, adsorbents,

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confidence: 99%

Novel magnetic propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) as a highly efficient and reusable nanoreactor for the sustainable synthesis of imidazopyrimidine derivatives

Akbari

Dekamin

Yaghoubi

et al. 2020

Sci Rep

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“…In this regard, for removing these compounds from fuels, the oxidation of sulfur compounds coupled with the extraction of the resulting sulfone by means of a solvent has been reported. [ 3 ] Likewise, the conversion of thiols to disulfides is essential in medical, biological, and industrial areas. Disulfides are used to stabilize peptides in proteins, design of rechargeable lithium batteries, sulfonylation of enolates, and as vulcanizing agent for rubber and elastomers.…”

Section: Introductionmentioning

confidence: 99%

Oxo‐vanadium(IV) unsymmetrical Schiff base complex immobilized on γ‐Fe₂O₃ nanoparticles: A novel and magnetically recoverable nanocatalyst for selective oxidation of sulfides and oxidative coupling of thiols

Mahdian

Ardakani

Heydari‐Bafrooei

et al. 2021

Applied Organom Chemis

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In this research, an unsymmetrical salen‐type oxo‐vanadium(IV) complex, [VO(salenac‐OH)] (salenac‐OH = [9‐(2′,4′‐dihydroxyphenyl)‐5,8‐diaza‐4‐methylnona‐2,4,8‐trienato](‐2)), was synthesized and covalently immobilized on the surface of magnetic γ‐Fe2O3 nanoparticles. The resulting γ‐Fe2O3@[VO(salenac‐OH)] nanoparticles were characterized by several techniques including Fourier transform infrared (FT‐IR) spectroscopy, X‐ray diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM), energy‐dispersive X‐ray (EDX) spectroscopy, vibrating sample magnetometry (VSM), thermal gravimetric analysis (TGA), inductively coupled plasma (ICP), and elemental analysis. The prepared γ‐Fe2O3@[VO(salenac‐OH)] nanoparticle was utilized as an efficient catalyst for selective oxidation of sulfides to sulfoxides using 30% H2O2 as oxidant and oxidative coupling of thiols into disulfides with urea/H2O2 (UHP) as an oxidizing reagent. The products were achieved with good to excellent yields at room temperature with no over‐oxidation of sulfoxides and disulfides to unexpected by‐products. This catalyst can be magnetically recovered by applying an external magnet and reused for five continuous cycles in both oxidation reactions without a significant loss in its catalytic activity. Furthermore, the FT‐IR spectrum and XRD pattern of the recovered catalyst showed no critical change to those of the fresh one.

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“…Some of these materials can have microporosity alongside the mesoporosity which can increase the surface area and subsequently e ciency of the material in the applications 15,16 . Since these materials are synthetic, there should be a synthetic bottom-up strategy for the reaching to such materials in which the presence of template (mostly a soft template), e.g., F127 and P123, is inevitable [17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

Highly Ordered Hybrid Mesoporous Organosilica: An Exceptional Anchor for Pd Nanoparticles and Catalyst Nitroaromatic Reduction

Zebardasti

Dekamin

Doustkhah

2021

Preprint

Self Cite

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Hybridization of mesoporous organosilica (MO) to reinforce the surface capability in adsorption and stabilization of noble metal nanoparticles are of great attention in generating noble metal-based catalysts. Here, we used a unique hybrid of organic-inorganic mesoporous silica which in pore profile pattern was similar to the well-known mesoporous silica, SBA-15. This hybrid mesoporous silica was further incorporated in the synthesis and stabilization of Pd nanoparticles on its surface and then, the obtained Pd supported MO, was employed as a heterogeneous green catalyst in the conversion of p-nitrophenol (PNP) to p-aminophenol (PAP) at room temperature with efficient recyclability.

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Merging periodic mesoporous organosilica (PMO) with mesoporous aluminosilica (Al/Si-PMO): A catalyst for green oxidation

Cited by 39 publications

References 45 publications

Novel magnetic propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) as a highly efficient and reusable nanoreactor for the sustainable synthesis of imidazopyrimidine derivatives

Novel magnetic propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) as a highly efficient and reusable nanoreactor for the sustainable synthesis of imidazopyrimidine derivatives

Oxo‐vanadium(IV) unsymmetrical Schiff base complex immobilized on γ‐Fe₂O₃ nanoparticles: A novel and magnetically recoverable nanocatalyst for selective oxidation of sulfides and oxidative coupling of thiols

Highly Ordered Hybrid Mesoporous Organosilica: An Exceptional Anchor for Pd Nanoparticles and Catalyst Nitroaromatic Reduction

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Merging periodic mesoporous organosilica (PMO) with mesoporous aluminosilica (Al/Si-PMO): A catalyst for green oxidation

Cited by 39 publications

References 45 publications

Novel magnetic propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) as a highly efficient and reusable nanoreactor for the sustainable synthesis of imidazopyrimidine derivatives

Novel magnetic propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) as a highly efficient and reusable nanoreactor for the sustainable synthesis of imidazopyrimidine derivatives

Oxo‐vanadium(IV) unsymmetrical Schiff base complex immobilized on γ‐Fe2O3 nanoparticles: A novel and magnetically recoverable nanocatalyst for selective oxidation of sulfides and oxidative coupling of thiols

Highly Ordered Hybrid Mesoporous Organosilica: An Exceptional Anchor for Pd Nanoparticles and Catalyst Nitroaromatic Reduction

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Oxo‐vanadium(IV) unsymmetrical Schiff base complex immobilized on γ‐Fe₂O₃ nanoparticles: A novel and magnetically recoverable nanocatalyst for selective oxidation of sulfides and oxidative coupling of thiols