Acrolein hydrogenation on PdPt powder catalysts prepared by colloid synthesis

Győrffy, Nóra; Paál, Z.

doi:10.1016/j.molcata.2008.08.012

Cited by 14 publications

(12 citation statements)

References 26 publications

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“…Recent work has highlighted the potential of using supported PdPt bimetallic catalysts in hydrogenation reactions. 53 For this reason, an equimolar bimetallic 0.97 % PdPt/TiO2 catalyst was prepared by the same preparation method and tested for the hydrogenation of FF under our standard conditions (3 bar H2, 30 C). The catalytic performance of synthesised bimetallic 0.97 % PdPt/TiO2 was compared with the monometallic 1.19 .% Pd/TiO2 and 1 % Pt/TiO2 catalysts as shown in Table 5.…”

Section: Bimetallic Pd-pt/tio2 Catalystmentioning

confidence: 99%

The selective hydrogenation of furfural over supported palladium nanoparticle catalysts prepared by sol-immobilisation: effect of catalyst support and reaction conditions

Albilali

Douthwaite

et al. 2018

Catal. Sci. Technol.

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Section: Bimetallic Pd-pt/tio2 Catalystmentioning

confidence: 99%

The selective hydrogenation of furfural over supported palladium nanoparticle catalysts prepared by sol-immobilisation: effect of catalyst support and reaction conditions

Albilali

Douthwaite

et al. 2018

Catal. Sci. Technol.

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“…139 In some reactions catalyzed with well shaped Pt nanoparticles as catalysts in colloidal solution, it was found that the activity of the nanoparticles decreases during the course of the reaction as a result of shape changes of the metal particles. 152 Some types of chemical reactions that have been catalyzed using transition metal nanocatalysts in colloidal solution include cross-couplings, 31,32,152,156,[165][166][167][168] electron transfers, 89,139,[169][170][171] hydrogenations, 124,129,134,[172][173][174][175][176][177][178] and oxidations. [179][180][181][182] There are many other types of reactions that have also been catalyzed by colloidal transition metal nanoparticles, but due to the vast volume of literature, we focus on only the above four prototypical types of reactions in this review.…”

Section: Metal Colloids As Catalysts In Quasihomogeneous Catalysismentioning

confidence: 99%

Colloidal metal nanoparticles as a component of designed catalyst

Jia

Schüth

2011

Phys. Chem. Chem. Phys.

416

334

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Recent advances in the synthesis of colloidal metal nanoparticles of controlled sizes and shapes that are relevant for catalyst design are reviewed. Three main methods, based on colloid chemistry techniques in solution, i.e., chemical reduction of metal salt precursors, electrochemical synthesis, and controlled decomposition of organometallic compounds and metal-surfactant complexes, are used to synthesize metal nanoparticles. Their catalytic activity and selectivity depend on the shape, size and composition of the metal nanoparticles, and the support effect, as shown for many reactions in quasi-homogeneous and heterogeneous catalysis. A specially designed type of thermally stable catalysts--"embedded" metal catalysts, in which metal nanoparticles are isolated by porous support shells so that metal sintering is effectively avoided at high temperatures, are also introduced. The utilization of pre-prepared colloidal metal nanoparticles with tuned size, shape and composition as components of designed catalysts opens up new field in catalysis.

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“…However, there is a trade-off between high selectivity and high activity in that high selectivity to allyl alcohol is a result of the weak binding of acrolein (which is favored over Ag) whereas the efficient dissociation of H 2 takes place over 3 metals such as Pd and Pt which are too reactive for molecular adsorption of acrolein and selectivity shifts towards undesired products. [19][20][21][22] Alloys have been employed previously for the selective hydrogenation of α, β-unsaturated aldehydes. For example, Rh-Cu/SiO 2 alloy catalysts showed both higher selectivity and activity to crotyl alcohol in the selective hydrogenation of crotonaldehyde.…”

Section: Introductionmentioning

confidence: 99%

Single-Atom Alloy Pd–Ag Catalyst for Selective Hydrogenation of Acrolein

et al. 2015

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Pd–Ag alloy catalysts with very dilute amounts of Pd were synthesized. EXAFS results demonstrated that when the concentration of Pd was as low as 0.01 wt %, Pd was completely dispersed as isolated single atoms in Ag nanoparticles. The activity for the hydrogenation of acrolein was improved by the presence of these isolated Pd atoms due to the creation of sites with lower activation energy for H2 dissociation. In addition, for the same particle size, the 0.01% Pd/8% Ag alloy nanoparticles exhibited higher selectivity than their monometallic counterparts, suggesting that the Pd atom may act as a site for the favorable bonding of the acrolein molecule for facile hydrogenation of the aldehyde functionality.

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Acrolein hydrogenation on PdPt powder catalysts prepared by colloid synthesis

Cited by 14 publications

References 26 publications

The selective hydrogenation of furfural over supported palladium nanoparticle catalysts prepared by sol-immobilisation: effect of catalyst support and reaction conditions

The selective hydrogenation of furfural over supported palladium nanoparticle catalysts prepared by sol-immobilisation: effect of catalyst support and reaction conditions

Colloidal metal nanoparticles as a component of designed catalyst

Single-Atom Alloy Pd–Ag Catalyst for Selective Hydrogenation of Acrolein

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