Concept

Catalyst poisoning

Publications associées (183)

Metal-Free Catalyst for the Chemoselective Methylation of Amines Using Carbon Dioxide as a Carbon Source

Paul Joseph Dyson, Gabor Laurenczy, Felix Daniel Bobbink, Shoubhik Das

N-methylation of amines is an important step in the synthesis of many pharmaceuticals and has been widely applied in the preparation of other key intermediates and chemicals. Therefore, the development of efficient methylation methods has attracted conside ...

Wiley-V C H Verlag Gmbh2014

Selective hydrogenation of 2-methyl-3-butyn-2-ol over Pd-nanoparticles stabilized in hypercrosslinked polystyrene: Solvent effect

Lioubov Kiwi

Selective hydrogenation of 2-methyl-3-butyn-2-ol (MBY) to 2-methyl-3-butene-2-ol (MBE) over Pd supported on hypercrosslinked polystyrene was studied in polar (ethanol, isopropanol, water) and non-polar (cyclohexane, toluene, octane, hexane, heptane and m-x ...

Elsevier2014

An examination of catalyst deactivation in p-chloronitrobenzene hydrogenation over supported gold

Lioubov Kiwi, Fernando Cardenas Lizana, Daniel André Samuel Lamey, Xiaodong Wang

The stability of Au/Al2O3 in the continuous gas phase (423 K) hydrogenation of p-chloronitrobenzene (p-CNB) to p-chloroaniline (p-CAN) has been investigated over an inlet H-2/p-CNB = 4-390, i.e. from close to stoichiometry to H2 far in excess. The catalyst ...

Elsevier2014

Adsorption of Small Hydrocarbons on the Three-Fold PdGa Surfaces: The Road to Selective Hydrogenation

Harald Brune, Roland Widmer, Daniele Passerone, Jan Prinz

Intermetallic compounds are a promising class of materials as stable and selective heterogeneous catalysts. Here, the (111) and (-1-1-1) single crystal surfaces of the PdGa intermetallic compound were studied as model catalysts with regard to the selective ...

American Chemical Society2014

Enhanced oxygen evolution activity by NiOx and Ni(OH)(2) nanoparticles

Xile Hu, Lucas-Alexandre Stern

Small nanoparticles of nickel oxide and nickel hydroxide were investigated for the oxygen evolution reaction (OER) in alkaline solutions. These nanoparticles showed excellent catalytic activity, giving a current density of 10 mA cm(-2) at overpotentials (e ...

Royal Society of Chemistry2014

Efficient reduction of bromates using carbon nanofibre supported catalysts: Experimental and a comparative life cycle assessment study

Lioubov Kiwi

Structured hierarchical catalysts were developed for efficient reduction of bromates in water. In the catalysts a small amount of active metal, 0.3 wt.% Pd, is supported onto carbon nanofibres grown either on sintered metal fibres or on a carbon cloth. In ...

Elsevier2014

MoS2 formed on Mesoporous Graphene as a Highly Active Catalyst for Hydrogen Evolution

Hubert Girault, Micheal Diarmaid Scanlon, Jie Zhu

A highly active and stable electrocatalyst for hydrogen evolution is developed based on the in situ formation of MoS2 nanoparticles on mesoporous graphene foams (MoS2/MGF). Taking advantage of its high specific surface area and its interconnected conductiv ...

Wiley-Blackwell2013

A Tunable Class of Chiral Cp Ligands for Enantioselective Rhodium(III)-Catalyzed C-H Allylations of Benzamides

Nicolai Cramer, Baihua Ye

The lack of robust and tunable chiral versions of cyclopentadienyl (Cp) ligands hampers progress in the development of catalytic asymmetric versions of a myriad of reactions catalyzed by this ubiquitous ligand. Herein, we describe of a class of chiral Cp l ...

Amer Chemical Soc2013

Bromate catalytic reduction in continuous mode using metal catalysts supported on monoliths coated with carbon nanofibers

Lioubov Kiwi

Nitrogen-doped and un-doped carbon nanofibers layers, denoted as N-CNFs and CNFs respectively, coating the walls of cordierite monoliths have been used as support for Pd and Ru catalyst. They have been tested in bromate reduction in batch and continuous op ...

Elsevier2013

Structure sensitivity of selective acetylene hydrogenation over the catalysts with shape-controlled palladium nanoparticles

Rocio Micaela Crespo Quesada, Artur Yarulin

The structure sensitivity of acetylene hydrogenation on catalysts with controlled shape of palladium nanoparticles was studied. Palladium particles of cubic (Pd-cub), cuboctahedral (Pd-co) and octahedral (Pd-oct) shapes were obtained by a colloidal method. ...

SP MAIK Nauka/Interperiodica, Springer2012

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