Liquid-phase hydrogenation of phenylacetylene to styrene on silica-supported Pd–Fe nanoparticles

Shesterkina, Anastasiya A.; Кириченко, О. А.; Kozlova, L. М.; Капустин, Г. И.; Мишин, И. В.; Strelkova, Anna A.; Kustov, L. М.

doi:10.1016/j.mencom.2016.05.002

Cited by 39 publications

(16 citation statements)

References 20 publications

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“…The two peaks centered at 427 and 518 °C are due to the reduction of Fe x O y , where the former can be assigned to the reduction of Fe 2 O 3 to Fe 3 O 4 and the latter is ascribed to the reduction of Fe 3 O 4 to metallic Fe. 50,52 Although literatures and our TPR studies reported the complete reduction of Fe x O y to metallic Fe at 500−600 °C, 50,52 we cannot exclude the possibility of complete reduction of a small amount of Fe x O y at 350 °C in the presence of metallic Pd. Therefore, we speculate that Pd−Fe and Pd−Fe x O y interactions could both influence the catalytic performance.…”

Section: Resultsmentioning

confidence: 75%

Pd–Fe_xO_y Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes

Chen

Yan

et al. 2021

J. Phys. Chem. C

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In this work, Pd−Fe x O y hybrid nanoparticles encaged hollow mesoporous silica nanoreactors (Pd−Fe x O y @HMSNs) are synthesized, which features ∼3−4 nm Pd−Fe x O y hybrid nanoparticles inside ∼17 nm hollow cavities of ∼32 nm mesoporous silica nanoreactors. By employing Pd and Fe ions containing polymer micelles as templates for silica deposition, hollow mesoporous silica nanoreactors and the residence of functional nanoparticles inside hollow cavities are simultaneously obtained. Through adjusting the ratios of Pd 2+ /Fe 3+ in micelles, various Pd−Fe x O y @HMSNs with different Pd/Fe ratios are synthesized and tested for reduction of nitroarenes with NaBH 4 . Relative to Pd@HMSNs, Fe x O y @HMSNs and their physical mixtures, Pd 1 −(Fe x O y ) 1/x @HMSNs illustrate a greatly enhanced catalytic performance for reductions of a series of substituted nitroarenes with NaBH 4 to aminoarenes. The catalytic enhancement of Pd−Fe x O y @HMSNs is ascribed to the synergistic effect of Pd and Fe x O y as well as the confinement effect of functional nanoparticles inside hollow cavities.

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Section: Resultsmentioning

confidence: 75%

Pd–Fe_xO_y Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes

Chen

Yan

et al. 2021

J. Phys. Chem. C

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“…A Pd−Fe/SiO 2 catalyst prepared by Shesterkina et al. showed high activity and selectivity in the process of phenylacetylene hydrogenation to phenylethylene under mild conditions [11] . Hronec et al.…”

Section: Introductionmentioning

confidence: 99%

“…[10] A PdÀ Fe/SiO 2 catalyst prepared by Shesterkina et al showed high activity and selectivity in the process of phenylacetylene hydrogenation to phenylethylene under mild conditions. [11] Hronec et al prepared a MgO-supported PdÀ Cu catalyst, which could hydrogenate the furfural to furfuryl alcohol with the 98% of selectivity in water. [12] The PdÀ Au clusters were also prepared by Shen et al to obtain a great hydrogenation selectivity for C=C bonds.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanocrystal‐supported Pd‐Co Bimetallic Catalyst for Selective Hydrogenation of 3‐Nitrostyrene

Zhu

Ren

et al. 2022

ChemNanoMat

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Herein, we prepared an even-dispersed bimetallic PdÀ Co nanoparticles supported on cellulose nanocrystal (CNC) matrix (denoted as PdÀ Co/CNC-x; x is the added Co/Pd molar ratio during the preparation) for selective hydrogenation of 3-nitrostyrene (NS). The optimized PdÀ Co/CNC-2.5 catalyst showed the highest catalytic activity with TOF value of 2570 h À 1 and 94.1% selectivity of 3-ethylnitrobenzene (ENB) in methanol under 3 bar H 2 at 50 °C. The reaction pathway revealed that the PdÀ Co/CNC-2.5 catalyst exhibited the high priority on the C=C bonds hydrogenation, while the 3-ethylaniline (EA) was the over-hydrogenation product from NS via ENB. The structure-activity relationship study demonstrated that the synergistic effect of PdÀ Co in PdÀ Co/CNC-2.5 played a crucial role in the hydrogenation of NS. Moreover, compared to the monometallic Pd/CNC catalyst, the kinetic analysis revealed a relative lower reaction barrier of CNC supported PdÀ Co nanoparticles. This exploration will provide a guidance for the catalyst construction in the selective hydrogenation of the unsaturated C=C bonds.

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“…One of the key factors affecting the properties of iron-containing catalysts in the hydrogenation of CO 2 is the ratio of the oxide and carbide phases of iron. Iron oxides are responsible for the reverse water shift reaction [ 17 , 18 ], and iron carbides are the centers of chain formation and growth [ 19 , 20 ]. Various promoters are used to increase the activity and selectivity of these catalysts; as a rule, these are alkali metals.…”

Section: Introductionmentioning

confidence: 99%

Zn Doping Effect on the Performance of Fe-Based Catalysts for the Hydrogenation of CO2 to Light Hydrocarbons

et al. 2022

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In this work, we studied the role of zinc in the composition of supported iron-containing catalysts for the hydrogenation of CO2. Various variants of incipient wetness impregnation of the support were tested to obtain catalyst samples. The best results are shown for samples synthesized by co-impregnation of the support with a common solution of iron and zinc precursors at the same molar ratio of iron and zinc. Catalyst samples were analyzed by various methods: Raman, DRIFT-CO, TPR-H2, XPS, and UV/Vis. The introduction of zinc leads to the formation of a mixed ZnFe2O4 phase. In this case, the activation of the catalyst proceeds through the stage of formation of the metastable wustite phase FeO. The formation of this wustite phase promotes the formation of metallic iron in the composition of the catalyst under the reaction conditions. It is believed that the presence of metallic iron is a necessary step in the formation of iron carbides—that is, active centers for the formation and growth of chain in the hydrocarbons. This leads to an increase in the activity and selectivity of the formation of hydrocarbons in the process of CO2 hydrogenation.

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Liquid-phase hydrogenation of phenylacetylene to styrene on silica-supported Pd–Fe nanoparticles

Cited by 39 publications

References 20 publications

Pd–Fe_xO_y Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes

Pd–Fe_xO_y Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes

Cellulose Nanocrystal‐supported Pd‐Co Bimetallic Catalyst for Selective Hydrogenation of 3‐Nitrostyrene

Zn Doping Effect on the Performance of Fe-Based Catalysts for the Hydrogenation of CO2 to Light Hydrocarbons

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Liquid-phase hydrogenation of phenylacetylene to styrene on silica-supported Pd–Fe nanoparticles

Cited by 39 publications

References 20 publications

Pd–FexOy Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes

Pd–FexOy Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes

Cellulose Nanocrystal‐supported Pd‐Co Bimetallic Catalyst for Selective Hydrogenation of 3‐Nitrostyrene

Zn Doping Effect on the Performance of Fe-Based Catalysts for the Hydrogenation of CO2 to Light Hydrocarbons

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Pd–Fe_xO_y Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes

Pd–Fe_xO_y Hybrid Nanoparticles Encaged Hollow Mesoporous Silica Nanoreactors for Reduction of Nitroarenes to Aminoarenes