Ru Nanoparticles Entrapped in Ordered Mesoporous Carbons: An Efficient and Reusable Catalyst for Liquid-Phase Hydrogenation

Ding, Yue; Li, Xiaohong; Hu, Pan; Wu, Peng

doi:10.1007/s10562-013-1137-9

Cited by 25 publications

(22 citation statements)

References 25 publications

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“…These results follow from the presence of PtNiB NPs within the interior walls of the CMK‐3 leading to a decrease in specific surface area . Nevertheless, the specific surface area and pore volume of PtNiB/CMK‐3 remained adequate for mass transfer …”

Section: Resultsmentioning

confidence: 99%

Electrocatalytic Upgrading of Lignin‐Derived Bio‐Oil Based on Surface‐Engineered PtNiB Nanostructure

Zhou

Gao

Zhong

et al. 2019

Adv Funct Materials

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The development of robust electrocatalysts for electrocatalytic hydrogenation (ECH) of guaiacol and related lignin model monomers is necessary for the stabilization or upgrading of bio‐oil. Additionally, the efficiency of biomass conversion to bio‐oil products remains below the minimum requirements for its implementation at scale. Herein, a PtNiB/CMK‐3 catalyst with pronounced ECH performance in the conversion of guaiacol and related model lignin monomers to bio‐oil under optimally mild conditions, through a modulation strategy that modified the electronic structure of PtNi via boron alloying, is prepared. Notably, the optimized PtNiB/CMK‐3 exhibited an inspiring high faradaic efficiency of 86.2%, which is significantly higher (13.7 times) than that of the PtNi/CMK‐3 without B‐doping (6.3%). Experimental results and theoretical calculations showed that the B‐doping optimized the PtNiB alloy surface electron structure, simultaneously promoting substrate and intermediate adsorption and the ECH process. In addition, the uniform dispersion of PtNiB nanoparticles embedded within the mesoporous channels of CMK‐3 ensures an enhanced utilization efficiency, leading to improvements in stability and bio‐oil product generation. The lab‐scale ECH experiment of guaiacol also certified the scale‐up potential. This work opens a promising avenue to the rational design of advanced and highly efficient electrocatalysts for biomass upgrading.

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Section: Resultsmentioning

confidence: 99%

Electrocatalytic Upgrading of Lignin‐Derived Bio‐Oil Based on Surface‐Engineered PtNiB Nanostructure

Zhou

Gao

Zhong

et al. 2019

Adv Funct Materials

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“…31 The data for dioctyl ether are not published, but dioctyl phthalate has a dielectric constant of 5.1. 31 Thus, polarization force could be a trigger causing segregation of both types of particles from the solvent, leading to NP aggregation, which is pronounced at lower reaction temperatures and in the less favourable (for NP dissolution) solvent (diphenyl ether) (Scheme 1). However, when aggregation of iron oxide NPs initiates, their collective magnetic properties change due to a change in dipole-dipole interactions and they may begin exhibiting ferrimagnetic behaviour, despite the individual NPs being superparamagnetic.…”

Section: Mechanism Of Aggregation or Destabilization Of Fe 3 O 4 /γ-Fmentioning

confidence: 99%

“…This reaction is frequently used as a standard test for the catalyst activity 22,23 but also has commercial importance in the aniline production for the polyurethane industry. 24 Hydrogenation of nitrobenzene has been catalyzed by Au NPs, 25,26 Pd NPs, 27,28 Pt NPs, 29 Ru NPs, 28,30,31 etc. Although Pd was shown to be the most active catalyst in this reaction, 28 the interest in Ru is growing fast owing to the Ru price being about 9% of the price of Pd.…”

Section: Introductionmentioning

confidence: 99%

Design of ruthenium/iron oxide nanoparticle mixtures for hydrogenation of nitrobenzene

Easterday

Sanchez-Felix

Losovyj

et al. 2015

Catal. Sci. Technol.

105

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Here we report novel catalysts for nitrobenzene hydrogenation based on Ru/RuO 2 nanoparticles (NPs) and including iron oxide NPs, allowing magnetic recovery. The solvent type, reaction temperature, and the size and composition of initial iron oxide NPs are demonstrated to be the control factors determining synthesis outcomes including the degree of NP aggregation and catalytic properties. A complete characterization of the catalysts using transmission electron microscopy (TEM), X-ray powder diffraction (XRD), x-ray photoelectron spectroscopy (XPS), and energy dispersive x-ray spectroscopy (EDS) allowed assessment of the structure-property relationships. It is revealed that coexistence of the Ru/RuO 2 and iron oxide NPs in the catalyst as well as the proximity of two different NP types lead to significantly higher aniline yields and reaction rates. The catalytic properties are also influenced by the type of iron oxide NPs present in the catalytic samples.

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“…Which indirectly helps in the mass transfer of reactant and product during hydrogenation of benzaldehyde . The selectivity observed for Ru/CMK‐3, Ru/AC, and Ru/C is similar owing to the Ru metal which is highly selective towards alcohol formation …”

Section: Noble Metal Based Catalystsmentioning

confidence: 98%

Catalytic Hydrogenation of Benzaldehyde for Selective Synthesis of Benzyl Alcohol: A Review

et al. 2016

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In the recent past, various catalysts have been used for hydrogenation of benzaldehyde to benzyl alcohol and the efficiency of the catalysts observed is found to be less.This review focuses on catalytic hydrogenation and their parameters associated with supports, methods of preparation, solvents involved, reaction conditions in converting benzaldehyde to benzyl alcohol. Critical aspect of review is to evaluate activities of various heterogeneous catalysts that can selectively reduce benzaldehyde to benzyl alcohol. The catalysts include various transition (Ni, Cu, Co) and noble metals (Au, Pt, Pd, Ru), monoliths and metal oxides (MgO, CaO, BaO, Al2O3, CeO2, ZrO2, etc.,), which are all active in the reaction. Among the transition metals, cobalt‐based catalysts depicted promising activity, while ruthenium‐based systems demonstrated spectacular activity among noble metal series. Hydrogenation by electrochemical reduction using platinum, palladium, nickel has also been reviewed.

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Ru Nanoparticles Entrapped in Ordered Mesoporous Carbons: An Efficient and Reusable Catalyst for Liquid-Phase Hydrogenation

Cited by 25 publications

References 25 publications

Electrocatalytic Upgrading of Lignin‐Derived Bio‐Oil Based on Surface‐Engineered PtNiB Nanostructure

Electrocatalytic Upgrading of Lignin‐Derived Bio‐Oil Based on Surface‐Engineered PtNiB Nanostructure

Design of ruthenium/iron oxide nanoparticle mixtures for hydrogenation of nitrobenzene

Catalytic Hydrogenation of Benzaldehyde for Selective Synthesis of Benzyl Alcohol: A Review

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