Activity/selectivity control in Pd/H x MoO 3 catalyzed cinnamaldehyde hydrogenation

Kołodziej, Michał; Drelinkiewicz, A.; Lalik, E.; Gurgul, Jacek; Duraczyńska, Dorota; Kosydar, Robert

doi:10.1016/j.apcata.2016.01.028

Cited by 16 publications

(11 citation statements)

References 60 publications

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“…Still now selectivity is a challenging problem and it strongly depends on the nature of the active metal catalyst and on the hydrogenation reaction conditions . As reported in the literature, heterogeneous Pd catalysts preferentially reduce the carbon‐carbon double bond of α,β‐unsaturated aldehydes; however, the activity and selectivity of supported palladium catalysts can be affected by pH and by suitable promoters . Pt and Rh based catalysts, on the other hand, are active towards the hydrogenation of both C=C and C=O double bond .…”

Section: Resultsmentioning

confidence: 99%

Alternative Recovery and Valorization of Metals from Exhausted Catalytic Converters in a New Smart Polymetallic Catalyst

et al. 2019

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A new metals‐polymeric composite, Metx‐EPS (I), was prepared to be used as catalyst in water or in two‐phase aqueous conditions. The metals source was an exhausted catalytic converter that was grinded and treated with an acidic solution at room temperature. After filtration, the solution was concentrated, neutralized and added to a broth of Klebsiella oxytoca DSM 29614 to produce (I) where metals are embedded in a peculiar polysaccharide structure (EPS). The composite was easily recovered from the fermentation broth and purified. The process protocol was verified many times and was shown to be reproducible satisfactorily. The % recovery of metals, originally present in the converter, was good as determined by atomic absorption. The morphology and the chemical state of main metals in (I) were investigated by X‐ray absorption spectroscopy methods (XANES and EXAFS). No metallic alloy seems to be evident. The catalytic activity and a possible synergic effect due to the presence of the different metals was valuated in the hydrogenation of some substrates, valuable precursors for the production of fine chemicals.

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Section: Resultsmentioning

confidence: 99%

Alternative Recovery and Valorization of Metals from Exhausted Catalytic Converters in a New Smart Polymetallic Catalyst

et al. 2019

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“…From the Pd 3d spectra (Fig. 5c), the Pd species in the fresh sample included Pd metal (335.5 eV), and PdO (338.5 eV), 39,40 indicating a strong interaction existed between the Pd species and the support.…”

Section: Characterization Of the Catalystmentioning

confidence: 99%

Synergy of highly dispersed Pd and the oxygen-vacancy-promoted hydrodeoxygenation of lactic acid to propionic acid

Zhao

Tang

et al. 2023

New J. Chem.

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“…4,5 Great efforts for this reaction have been devoted to designing metal-based selective catalysts, including employing bimetallic alloys, 6 metal−support interaction, 7−9 and steric hindrance. 10−13 In general, noble metals, including Pt, 11,14 Pd, 7,15 and Au, 16 can efficiently catalyze hydrogenation of CAL, but the poor reserves limit their wide applications.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Silica-Coated Pt–Co_xO_y Hybrid Nanoparticles

Wang,

Hu,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL) is difficult due to the intrinsic difficulty with thermodynamically easier hydrogenation of C�C bonds. In this work, Pt−Co x O y hybrid nanoparticles encapsulated in mesoporous silica nanospheres (Pt−Co x O y @mSiO 2 ) were synthesized by a sol−gel method, which showed greatly improved COL selectivity for hydrogenation of CAL. At 80 °C and 1.0 MPa of H 2 , Pt−Co x O y @mSiO 2 achieved a CAL conversion of 98.7% with a COL selectivity of 93.5%. In contrast, Pt@mSiO 2 yields 3phenylpropanol (HCOL) as the major product with HCOL selectivity of 67.2%, while PtCo@mSiO 2 yields 3-phenylpropionaldehyde with selectivity of 51.8% under the same conditions. The enhanced catalytic performance of Pt−Co x O y @mSiO 2 for hydrogenation of CAL to COL is ascribed to the Pt surface electron deficiency induced by metal−oxide interaction, and the protection of active NPs by silica shells results in good catalytic stability.

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Activity/selectivity control in Pd/H x MoO 3 catalyzed cinnamaldehyde hydrogenation

Cited by 16 publications

References 60 publications

Alternative Recovery and Valorization of Metals from Exhausted Catalytic Converters in a New Smart Polymetallic Catalyst

Alternative Recovery and Valorization of Metals from Exhausted Catalytic Converters in a New Smart Polymetallic Catalyst

Synergy of highly dispersed Pd and the oxygen-vacancy-promoted hydrodeoxygenation of lactic acid to propionic acid

Enhanced Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Silica-Coated Pt–Co_xO_y Hybrid Nanoparticles

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Activity/selectivity control in Pd/H x MoO 3 catalyzed cinnamaldehyde hydrogenation

Cited by 16 publications

References 60 publications

Alternative Recovery and Valorization of Metals from Exhausted Catalytic Converters in a New Smart Polymetallic Catalyst

Alternative Recovery and Valorization of Metals from Exhausted Catalytic Converters in a New Smart Polymetallic Catalyst

Synergy of highly dispersed Pd and the oxygen-vacancy-promoted hydrodeoxygenation of lactic acid to propionic acid

Enhanced Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Silica-Coated Pt–CoxOy Hybrid Nanoparticles

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Enhanced Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Silica-Coated Pt–Co_xO_y Hybrid Nanoparticles