Mechanistic insights into the hydroconversion of cinnamaldehyde using mechanochemically-synthesized Pd/Al-SBA-15 catalysts

Yepez, Alfonso; Hidalgo, José Manuel Soto; Pineda, Antonio; Černý, Radek; Jíša, Petr; García, A.; Romero, Antonio A.; Luque, Rafael

doi:10.1039/c4gc01354a

Cited by 22 publications

(23 citation statements)

References 29 publications

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“…Yepez et al. previously reported TEM images of pure Al‐SBA‐15 . In comparison, TEM images (Figure ) of representative catalysts synthesized in the present study show that the ordered porous structure of the Al‐SBA‐15 support was preserved upon Fe incorporation in continuous flow.…”

Section: Resultssupporting

confidence: 49%

“…Yepez et al previously reported TEM images of pure Al-SBA-15. [30] In comparison, TEM images ( The synthesized MNPs were employed as heterogeneous catalysts in the selective oxidative disruption of isoeugenol in the liquid phase by using aqueous hydrogen peroxide as a green oxidant, both at room temperature and at 90 8C( conventional heating). Figure 3d epictst he conversion of isoeuge- ucts.…”

Section: Resultsmentioning

confidence: 99%

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Continuous‐Flow Synthesis of Supported Magnetic Iron Oxide Nanoparticles for Efficient Isoeugenol Conversion into Vanillin

Marquez-Medina

Prinsen

et al. 2017

ChemSusChem

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This work presents the synthesis of iron oxide nanocatalysts supported on mesoporous Al-SBA-15 by using a continuous-flow setup. The magnetic nanomaterials were tested as catalysts in the oxidative disruption of isoeugenol by using hydrogen peroxide as a green oxidant, featuring high activities (63-88 % conversion) and good selectivities to vanillin (44-68 %). The catalytic systems exhibited good magnetic properties when synthesized under continuous-flow conditions at temperatures not exceeding 190 °C. The use of microwave irradiation significantly reduced times of reaction drastically but exerted negative effects on catalyst reusability.

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Section: Resultssupporting

confidence: 49%

Section: Resultsmentioning

confidence: 99%

Continuous‐Flow Synthesis of Supported Magnetic Iron Oxide Nanoparticles for Efficient Isoeugenol Conversion into Vanillin

Marquez-Medina

Prinsen

et al. 2017

ChemSusChem

Self Cite

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show abstract

“…In turn, a progressive weight loss of 8.6% was observed from 100 °C to 800 °C. Around 200 °C, DTA analysis ( Figure 2, green line) displayed a slight endothermic band, related to unbounded/physisorbed solvents [26]. In addition DTA experiments showed two exothermic peaks at 340 °C and 420 °C, associated with the decomposition of sulfathiazole and 3chloro-propylmethoxysilane, respectively.…”

Section: Methodsmentioning

confidence: 96%

Versatile Sulfathiazole-Functionalized Magnetic Nanoparticles as Catalyst in Oxidation and Alkylation Reactions

et al. 2019

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Catalyst design and surface modifications of magnetic nanoparticles have become attractive strategies in order to optimize catalyzed organic reactions for industrial applications. In this work, silica-coated magnetic nanoparticles with a core-shell type structure were prepared. The obtained material was successfully functionalized with sulfathiazole groups, which can enhance its catalytic features. The material was fully characterized, using a multi-technique approach. The catalytic performance of the as-synthesized material was evaluated in 1) the oxidation of benzyl alcohol to benzaldehyde and 2) the microwave-assisted alkylation of toluene with benzyl chloride. Remarkable conversion and selectivity were obtained for both reactions and a clear improvement of the catalytic properties was observed in comparison with unmodified γ-Fe2O3/SiO2 and γ-Fe2O3. Noticeably, the catalyst displayed outstanding magnetic characteristics which facilitated its recovery and reusability.

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“…On the other side, Pd-based catalysts suffer from aggregation and deactivation in each run [17][18][19]. Necessity of Pd species engagement with a suitable ligand or support is inevitable in order to obtain an efficient, recyclable, and atom efficient catalyst [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Exfoliation effect of PEG-type surfactant on Pd supported GO (SE-Pd(nanoparticle)/GO) in cascade synthesis of amides: A comparison with Pd(nanoparticle)/rGO

Rostamnia

Doustkhah

Zeynizadeh

2016

Journal of Molecular Catalysis A: Chemical

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In the presence investigation, a cascade method for the synthesis of primary amides is discussed by the catalysis of Pd supported onto graphene oxide (Pd/GO) nanosheets. Also, the effect of different polyethyleneglycol-type (PEG-type) polyethers including PEG-300, P123 and F127 on the catalytic activity of Pd/rGO is studied in the the reaction of aldehyde and hydroxylamine hydrochloride to give benzamide. Addition of PEG-type polyethers played an important role in raising the catalytic power of Pd(nanoparticle)/GO by exfoliation of GO sheets. The present paper introduces Pd(nanoparticle)/GO as first Pd supported GO for the synthesis of primary amides through this method. This catalyst was highly active, efficient, tolerant, and environmentally benign in one-pot conditions with recyclability at least for 8 runs. Also, this study suggests the prevailing catalytic activity of Pd(nanoparticle)/GO rather to Pd(nanoparticle)/rGO in a comparitive experiment.

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Mechanistic insights into the hydroconversion of cinnamaldehyde using mechanochemically-synthesized Pd/Al-SBA-15 catalysts

Abstract: The hydroconversion of cinnamaldehyde was studied using a simple and efficient hydrogen-donating protocol catalyzed by mechanochemically synthesized bifunctional Pd/Al-SBA-15 catalysts.

Cited by 22 publications

References 29 publications

Continuous‐Flow Synthesis of Supported Magnetic Iron Oxide Nanoparticles for Efficient Isoeugenol Conversion into Vanillin

Continuous‐Flow Synthesis of Supported Magnetic Iron Oxide Nanoparticles for Efficient Isoeugenol Conversion into Vanillin

Versatile Sulfathiazole-Functionalized Magnetic Nanoparticles as Catalyst in Oxidation and Alkylation Reactions

Exfoliation effect of PEG-type surfactant on Pd supported GO (SE-Pd(nanoparticle)/GO) in cascade synthesis of amides: A comparison with Pd(nanoparticle)/rGO

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