Concept

Nickel de Raney

Publications associées (32)

Structural Reversibility and Nickel Particle stability in Lanthanum Iron Nickel Perovskite-Type Catalysts

Davide Ferri, Oliver Kröcher, Debora Foppiano

Perovskite-type oxides have shown the ability to reversibly segregate precious metals from their structure. This reversible segregation behavior was explored for a commonly used catalyst metal, Ni, to prevent Ni sintering, which is observed on most catalys ...

Wiley-V C H Verlag Gmbh2017

Structured Non-Noble Metal Catalysts for the Liquid-Phase Reduction of Nitroaromatics

Oliver Anthony Beswick

The industrial production of aromatic amines, essential intermediates for the synthesis of several drugs, dyes, pigments and agrochemicals, requires the use of heterogeneous catalysis. These molecules were formerly produced by the Béchamp reduction, a non- ...

EPFL2017

N-formylation and N-methylation of amines using metal-free N-heterocyclic carbene catalysts and CO2 as carbon source

Paul Joseph Dyson, Felix Daniel Bobbink, Shoubhik Das

N-formylation and N-methylation of amines are important reactions that are used to produce a wide range of key intermediates and compounds. This protocol describes the environmentally benign N-formylation and N-methylation of primary and secondary amines u ...

Nature Publishing Group2017

Solid oxide fuel cell anode degradation by the effect of hydrogen chloride in stack and single cell environments

Christian Ludwig, Jan Van Herle, Stefan Diethelm, Hossein Madi

The poisoning effect by hydrogen chloride (HCl) on state-of-the-art Ni anode-supported solid oxide fuel cells (SOFCs) at 750 degrees C is evaluated in either hydrogen or syngas fuel. Experiments are performed on single cells and short stacks and HCl concen ...

2016

From Dimethylamine to Pyrrolidine: The Development of an Improved Nickel Pincer Complex for Cross-Coupling of Nonactivated Secondary Alkyl Halides

Rosario Scopelliti, Xile Hu, Thomas Clément Di Franco, Pablo Marcelo Perez Garcia

Replacement of a dimethyl amino group of the amidobis(amine) nickel(II) pincer complex (1), [((N2N)-N-Me)-Ni-Cl], by a pyrrolidino group resulted in a new nickel(II) pincer complex (2), [((PNNN)-N-yr-N-Me)Ni-Cl]. Complex 2 is an efficient catalyst for Kuma ...

American Chemical Society2016

Ruthenium Dispersion: A Key Parameter for the Stability of Supported Ruthenium Catalysts during Catalytic Supercritical Water Gasification

Christian Ludwig, Frédéric Vogel, Gaël Peng

The catalytic supercritical water gasification of isopropanol (450 degrees C, 30 MPa) over Ru catalysts supported on carbon and metal oxides was performed in a fixed-bed plug flow reactor. The Ru loading was between 1.2 and 2%. The catalyst stability over ...

Wiley-VCH Verlag2016

Ni-based structured catalyst for selective 3-phase hydrogenation of nitroaromatics

Paul Joseph Dyson, Lioubov Kiwi, Thomas La Grange, Daniel André Samuel Lamey, Oliver Anthony Beswick

We report herein on the development of Ni-based catalyst using activated carbon fibres (ACFs) as a structured support and its application for the three‐phase hydrogenation of nitroarenes (T = 353 K; P = 10 bar). It was shown that metallic Ni0 nanoparticles ...

Elsevier2016

A Pd-Cu2O nanocomposite as an effective synergistic catalyst for selective semi-hydrogenation of the terminal alkynes only

Shuliang Yang, Li Peng

A new type lead-free catalyst of a Pd-Cu2O nanocomposite was developed for highly selective semi-hydrogenation of alkynes. With unprecedented selectivity for the semi-hydrogenation of terminal alkynes to alkenes, we show for the first time that the catalys ...

Royal Society of Chemistry2016

A nickel iron diselenide-derived efficient oxygen-evolution catalyst

Xile Hu, Fang Song

Efficient oxygen-evolution reaction catalysts are required for the cost-effective generation of solar fuels. Metal selenides have been reported as promising oxygen-evolution catalysts; however, their active forms are yet to be elucidated. Here we show that ...

Nature Publishing Group2016

Ligand-Controlled Regiodivergent Nickel-Catalyzed Annulation of Pyridones

Nicolai Cramer, Pavel Alexandrovich Donets

The 1,6-annulated 2-pyridone motif is found in many biologically active compounds and its close relation to the indolizidine and quinolizidine alkaloid core makes it an attractive building block. A nickel-catalyzed CH functionalization of 2-pyridones and s ...

Wiley-VCH Verlag GmbH2015

Nickel-Catalyzed Direct Alkylation of Terminal Alkynes at Room Temperature: A Hemilabile Pincer Ligand Enhances Catalytic Activity

Rosario Scopelliti, Xile Hu, Peng Ren, Pablo Marcelo Perez Garcia

Direct coupling of alkyl halides with terminal alkynes provides an efficient and streamlined access to alkyl-substituted alkynes, which are important synthetic intermediates, biologically active molecules, and organic materials. However, until now,there ha ...

American Chemical Society2015

Manipulating the reaction path of the CO2 hydrogenation reaction in molecular sieves

Andreas Züttel, Davide Ferri, Elsa Callini

We demonstrate that the kinetics of the Sabatier reaction catalysed by sorption catalysts depends on the nanostructure of the catalyst-sorbent system. The catalysts are prepared by ion exchange of a nickel nitrate solution in two zeolites with different po ...

Royal Society of Chemistry2015