Characteristics of Au/HMS catalysts for selective oxidation of benzyl alcohol to benzaldehyde

Yan, Chun; Cheng, Jie; Wang, Hai Lin; Hu, Qin; Tian, Hua; He, Chi; Hao, Zhengping

doi:10.1016/j.cattod.2010.03.080

Cited by 67 publications

(26 citation statements)

References 34 publications

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“…Similar results were reported earlier by Ali et al [49]. Therefore, the catalytic activity of CuFe 2 O 4 -MHM is higher than other samples, due to that with very smaller particle size distribution would be a potentially efficient catalyst [50].…”

Section: Catalytic Oxidation Of Benzylic Alcoholssupporting

confidence: 82%

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Hibiscus rosa-sinensis Leaf Extracted Green Methods, Magneto-Optical and Catalytic Properties of Spinel CuFe2O4 Nano- and Microstructures

Manikandan

Durka²,

Antony

2015

J Inorg Organomet Polym

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Spinel CuFe 2 O 4 nano-and microstructures were synthesized by a simple, economical and eco-friendly microwave heating (MHM) and modified sol-gel methods (SGM) using metal nitrates and Hibiscus rosa-sinensis leaf extracted solution, instead of toxic inorganic/organic catalyst, template and surfactant. Powder XRD, FT-IR, EDX and SAED results were confirmed that the as-synthesized products have a single-phase spinel structure with high crystallinity and without the presence of any other secondary phase impurities. The morphology of the samples was revealed by HR-SEM and HR-TEM techniques show that the MHM and SGM products consist of nano-and microstructures, respectively, and their possible formation mechanisms were also proposed. The optical band gap (E g ) was measured using Kubelka-Munk model and it shows higher value (2.35 eV) for CuFe 2 O 4 -MHM than CuFe 2 O 4 -SGM (2.18 eV), due to the smaller particle size of CuFe 2 O 4 -MHM. The magnetic property of the samples showed a ferromagnetic behavior and the magnetization (M s ) value of CuFe 2 O 4 -MHM is higher i.e. 61.13 emu/g than CuFe 2 O 4 -SGM (57.25 emu/g). Both the samples were successfully tested as catalysts for the conversion of benzylic alcohols to respective carbonyls using H 2 O 2 (as oxidant) and acetonitrile (as a solvent) catalytic system. It was found that the CuFe 2 O 4 -MHM catalyst show best performance of conversion of aromatic alcohols into aldehydes than that of CuFe 2 O 4 -SGM. Spinel CuFe 2 O 4 catalyst is magnetically recyclable and could be reused with no significant loss in catalytic activity as proved for five consecutive cycles.

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Section: Catalytic Oxidation Of Benzylic Alcoholssupporting

confidence: 82%

“…However, the CuFe 2 O 4 catalyst surface gets regenerated by the action of H 2 O 2 , which leads to desorption of the product carbonyls, thus favor further oxidation. In addition, H 2 O 2 has been proved to be very efficient and environmentally friendly oxidant, since the product is only carbonyls [49,50].…”

Section: Catalytic Oxidation Of Benzylic Alcoholsmentioning

confidence: 99%

Hibiscus rosa-sinensis Leaf Extracted Green Methods, Magneto-Optical and Catalytic Properties of Spinel CuFe2O4 Nano- and Microstructures

Manikandan

Durka²,

Antony

2015

J Inorg Organomet Polym

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“…Literature reveals that supported Au catalysts have attracted appreciable research interests, as they are demonstrated to be one of the best catalysts for the oxidation of BzOH [14]. Recently, Choudhary and co-workers reported that Au nanoparticles supported on MgO (or TiO 2 , U 3 O 8 ) showed very high catalytic activity and excellent reusability for the oxidation process [15][16][17].…”

Section: Introductionmentioning

confidence: 98%

Kinetics of liquid phase oxidation of benzyl alcohol with hydrogen peroxide over bio-reduced Au/TS-1 catalysts

Zhan

Hong

Lü

et al. 2013

Journal of Molecular Catalysis A: Chemical

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“…For example, Au-Pd bimetallic catalysts supported on ZnO and MgO resulted in no formation of toluene. [30] The basic nature of the titanate nanobelts makes the catalyst particularly useful, especially compared with the extensive and more complicated efforts involving base addition [31][32][33] and support modification. [8][9][10]34] After full water removal by calcination, partial hydrolysis and Na + exchange in the titanate nanobelts could be completely inhibited to strengthen the basicity of the support.…”

mentioning

confidence: 99%

Palladium Nanoparticles Supported on Titanate Nanobelts for Solvent‐Free Aerobic Oxidation of Alcohols

Zhu

Liu

et al. 2015

ChemCatChem

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The solvent‐free selective oxidation of alcohols by O2 without any additives has been studied using palladium nanoparticles supported on a titanate nanobelt. The catalysts were prepared by polyol reduction and impregnation with different kinds of supports. They were evaluated in oxidation reactions of benzyl alcohol. The calcined titanate nanobelt was found to be the best support for the solvent‐free Pd‐catalyzed oxidation of alcohols and excellent catalytic activity as well as high selectivity to the corresponding benzaldehyde could be obtained. Moreover, palladium nanoparticles immobilized on the calcined titanate nanobelt could completely suppress the formation of toluene and benzoic acid, an effect that might be caused by the enhanced basic nature and morphology of the support. The catalyst was not only active and selective towards carbonyl compounds, but also recyclable under the oxidation conditions. This catalyst was also applicable for the oxidation of other alcohols.

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Characteristics of Au/HMS catalysts for selective oxidation of benzyl alcohol to benzaldehyde

Cited by 67 publications

References 34 publications

Hibiscus rosa-sinensis Leaf Extracted Green Methods, Magneto-Optical and Catalytic Properties of Spinel CuFe2O4 Nano- and Microstructures

Hibiscus rosa-sinensis Leaf Extracted Green Methods, Magneto-Optical and Catalytic Properties of Spinel CuFe2O4 Nano- and Microstructures

Kinetics of liquid phase oxidation of benzyl alcohol with hydrogen peroxide over bio-reduced Au/TS-1 catalysts

Palladium Nanoparticles Supported on Titanate Nanobelts for Solvent‐Free Aerobic Oxidation of Alcohols

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