Hydrogenation of cinnamaldehyde in the presence of PdAu/C catalysts prepared by the reverse “water-in-oil” microemulsion method

Szumełda, T.; Drelinkiewicz, A.; Kosydar, Robert; Gurgul, Jacek

doi:10.1016/j.apcata.2014.08.036

Cited by 48 publications

(44 citation statements)

References 71 publications

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“…Au-Pd particles on carbon with Au:Pd atomic ratio varying from 0.1 up to 2.1 were also prepared by the reverse "water-in-oil" microemulsion technique [82]. However, in this case, a single aqueous solution of PdCl 2 and HAuCl 4 was added to the solution of Triton-X-114 (polyoxyethylene (7,8)octylphenyl ether, the surfactant) in cyclohexane (the oil phase), to which hydrazine was then added.…”

Section: Metal Particles In Micellesmentioning

confidence: 99%

Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

Louis

2016

Catalysts

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This review focuses on the chemical methods used to prepare supported bimetallic heterogeneous catalysts, i.e., bimetallic nanoparticles deposited on a support. The review is limited to the preparation of gold-based bimetallic catalysts and moreover to bimetallic nanoparticles supported on powder inorganic supports, i.e., on the surface or in the porosity, and not on model supports such as single crystals.

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Section: Metal Particles In Micellesmentioning

confidence: 99%

Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

Louis

2016

Catalysts

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“…22,23 Some studies have shown the interest of using TiO 2 as a support for modifying the activity and the selectivity of Au NPs. 27 Goldbased bimetallic NPs considered up to now for this reaction are AuPd, 28,29 AuCu, 30 and AuNi 31 systems. We have previously reported on the colloidal preparation and characterization of AuRh NPs immobilized on rutile titania nanorods.…”

mentioning

confidence: 99%

Monitoring in situ the colloidal synthesis of AuRh/TiO₂ selective-hydrogenation nanocatalysts

et al. 2017

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AuRh nanoparticles (NPs) of various compositions and sizes in the 2-4 nm range were synthesized using a colloidal approach and were characterized at each preparation step by dynamic light scattering (DLS), ultraviolet-visible (UV-vis) spectroscopy, and liquid-phase transmission electron microscopy (liquid TEM).The AuRh colloids appear relatively instable, leading to their gradual coalescence. After fast immobilization of the metallic nanoparticles on rutile TiO 2 nanorods, the materials were investigated by high-resolution transmission electron microscopy (HRTEM) and low-temperature CO adsorption monitored by Fourier transform infrared (FTIR) spectroscopy. The inherent lack of miscibility between Au and Rh leads to partial segregation inside the NPs, which is further exalted after a reducing thermal treatment applied for PVA removal. The catalytic properties in the liquid-phase selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde are strongly influenced by these nanostructural modifications. While in as-prepared samples the intermixing between Au and Rh phases promotes the catalytic performances for Rh-rich AuRh catalysts through Au-induced stabilization of Rh in its metallic form, segregation into Janus particles after reduction decreases the catalytic activity.Bimetallic nanoparticles are of prominent importance in heterogeneous catalysis since the choices of metals and compositions allow one to tune the catalyst selectivity and improve its activity and stability.

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“…%)/CNF (carbon nanofiber) catalyst exhibiting complete CAL conversion with 98 % HCAL selectivity at 80 C under atmospheric pressure condition but requiring a reaction time of 30 h [23]. Also the carbon supported Pd-Au catalyst is reported to show CAL hydrogenation under a very mild condition (22 C and atmospheric pressure) with 100 % CAL conversion and 65 % HCAL selectivity [37]. The activity behavior of the commercial catalyst from Aldrich is much poor (both the conversion and selectivity is less than half) and requires as high as 50 h at atmospheric pressure.…”

Section: Comparison With Other Pd-based Catalytic Systemsmentioning

confidence: 99%

“…Graphene-supported Ni nanocatalyst shows selective hydrogenation towards C=C bond under atmospheric pressure [25]. Szumełda et al have shown that carbon supported PdAu catalyst also shows selective hydrogenation activity under atmospheric pressure [37]. High surface area alumina with narrow pore size distribution acts as an effective support for catalytic reaction [34].…”

Section: Introductionmentioning

confidence: 99%

Chemoselective hydrogenation of cinnamaldehyde at atmospheric pressure over combustion synthesized Pd catalysts

Das

Pal

Llorca

et al. 2017

Reac Kinet Mech Cat

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Hydrogenation of cinnamaldehyde in the presence of PdAu/C catalysts prepared by the reverse “water-in-oil” microemulsion method

Cited by 48 publications

References 71 publications

Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

Monitoring in situ the colloidal synthesis of AuRh/TiO₂ selective-hydrogenation nanocatalysts

Chemoselective hydrogenation of cinnamaldehyde at atmospheric pressure over combustion synthesized Pd catalysts

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Hydrogenation of cinnamaldehyde in the presence of PdAu/C catalysts prepared by the reverse “water-in-oil” microemulsion method

Cited by 48 publications

References 71 publications

Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

Monitoring in situ the colloidal synthesis of AuRh/TiO2 selective-hydrogenation nanocatalysts

Chemoselective hydrogenation of cinnamaldehyde at atmospheric pressure over combustion synthesized Pd catalysts

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Monitoring in situ the colloidal synthesis of AuRh/TiO₂ selective-hydrogenation nanocatalysts