Ruthénium

Science de la nature
Chimie
Chimie organique
Chimie organométallique

Publications associées (219)

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Mentions légales

Methods for the prepn. and purifn. of new carboxylated 2,2'-bipyridine ligands, two of which contain the new anchoring functionality malonate, and a reliable method for the synthesis of the corresponding Ru(bpy)2(L)2 complexes are described. Their s ...

2000

Permanent modification in electrothermal atomic absorption spectrometry - advances, anticipations and reality

A review with 80 refs. Permanent modification is an important recent development in chem. modification techniques which is promising in view of increasing sample throughput with 'fast' programs, reducing reagent blanks, preliminary elimination of unwanted ...

2000

Electrochemical promotion of ruthenium oxide catalysts for the gas phase combustion of ethylene

Christos Comninellis

In this paper the electrochem. promotion of RuO2 catalyst was studied for the oxidn. of C2H4 to CO2 and H2O. The reaction rate can be increased of up to a factor of 115 by anodic polarization. A kinetic model for the simulation of the open circuit reaction ...

1999

Etude de la promotion électrochimique de l'oxydation catalytique de l'éthylène sur des oxydes métalliques

The electrochemical promotion of heterogeneous catalytic reactions is a new development which draws the attention of the scientific community as much to fundamental research as to the possible direct applications of this phenomenon in automotive and in ind ...

EPFL1999

Conducting barriers for direct contact of PZT thin films on reactive substrates

Nava Setter, Paul Muralt, Thomas Maeder

Several bottom electrode systems for ferroelectric thin film deposition onto reactive substrates or reactive metal films have been investigated with respect to chemical barrier properties and contact resistivity. Such electrode systems should not deteriora ...

Electrochemical Society1999

Integrated sensor for continuous flow electrochemiluminescent measurements of codeine with different ruthenium complexes

Nico de Rooij

Batch and continuous-flow measurements of codeine were performed by electrochemiluminescence, using a miniaturized sensor combining transduction electrodes and a photodetector on the same silicon chip. In the case of flow measurements, a flow channel was a ...

1999

Grain boundary segregation under neutron irradiation in dilute alloys

Irradiation-induced segregation mechanisms are classified into solute-point-defect complex type and inverse Kirkendall type. For solutes that have a strong interaction with interstitials in a dilute alloy, the complex effect plays an important part in the ...

1998

Electrochemical promotion of ruthenium oxide catalysts for the gas phase combustion of ethylene

Christos Comninellis

The electrochem. promotion of RuO2 catalyst films, deposed onto yttria stabilized zirconia solid electrolyte (YSZ), was studied for the gas phase combustion of ethylene. Two order of magnitude increase in the reaction rate was obtained during anodic polari ...

1998

Conducting barrier electrodes for direct contact of PZT thin films on tungsten

Nava Setter, Paul Muralt, Thomas Maeder

Two W protection schemes for direct-contact bottom electrodes for PZT thin films, namely RuO2/Cr and RuO2/Ru, were compared with respect to protective performance and contact resistance up to 800 degrees C annealing temperature in oxygen. Cr clearly offers ...

1998

Ruthenium complex dyes and photovoltaic cells utilizing them as photosensitizers

Michael Graetzel, Mohammad Khaja Nazeeruddin

A compound of formula (I): (X)nRuLL1 where n is 1 or 2, preferably 2, and in which Ru is ruthenium; each X independently is selected from Cl, SCN, H2O, Br, I, CN and SeCN and L is a ligand of formulae (a) to (g) and L1 is selected from a ligand of formulae ...

(Ecole Polytechnique Federale de Lausanne (EPFL), Switz.).1994

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2000

Electrochemical and photoelectrochemical investigation of new carboxylatobipyridine(bis-bipyridine)ruthenium(II) complexes for dye-sensitized TiO2 electrodes

Ulf Anders Hagfeldt