Concept

Oxyde de potassium

Publications associées (12)

A Cation Concentration Gradient Approach to Tune the Selectivity and Activity of CO2 Electroreduction

The linear scaling relationship of the binding energies of different intermediates limits the catalyst performance in CO 2 electroreduction. Here we demonstrate a cation concentration gradient strategy to promote the activity and tune the selectivity of CO ...

2022

Mechanistic implications of lanthanum-modification on gold-catalyzed formic acid decomposition under SCR-relevant conditions

Davide Ferri, Oliver Kröcher

The use of formate-based ammonia precursors as alternatives to urea in the selective catalytic reduction (SCR) process requires that formic acid released upon their thermolysis in the hot exhaust is rapidly decomposed to carbon dioxide. This work aims at t ...

ELSEVIER SCIENCE BV2019

Promotion Effect of Alkali Metal Hydroxides on Polymer-Stabilized Pd Nanoparticles for Selective Hydrogenation of C–C Triple Bonds in Alkynols

Paul Joseph Dyson, Lioubov Kiwi, Jeremy Luterbacher, Florent Emmanuel Héroguel

Postimpregnation of Pd nanoparticles (NPs) stabilized within hyper-cross-linked polystyrene with sodium or potassium hydroxides of optimal concentration was found to significantly increase the catalytic activity for the partial hydrogenation of the C–C tri ...

American Chemical Society2017

Analyzing ion distributions around DNA

John Maddocks, Marco Pasi

We present a new method for analyzing ion, or molecule, distributions around helical nucleic acids and illustrate the approach by analyzing data derived from molecular dynamics simulations. The analysis is based on the use of curvilinear helicoidal coordin ...

Oxford University Press2014

A calcium ion-selective electrode array for monitoring the activity of HepG2/C3As in a microchannel

Philippe Renaud, Robert Meissner

Variations in calcium ion (Ca2+) concentrations play a crucial role in cell-cell communication; periodic changes act as cellular signals. In this study, we developed a solid-state calcium ion-selective electrode (Ca2+ ISE) integrated in a microchannel to m ...

Elsevier2012

Resilience of acid subalpine grassland to short-term liming and fertilisation

Thomas Spiegelberger, Claire Emilie Deléglise

A fertilisation experiment was started in the French Alps on an acid grassland at 2000 m in 1989 where lime as calcium carbonate ("liming") and Thomas Slag enriched by potassium chloride ("fertilisation") were added in a random block design until 1992. Sin ...

2010

Electrocatalysis induced by surface redox activities on conductive metal oxide electrodes

Stéphane Fierro

Iridium dioxide electrodes form part of the dimensionally stable anodes (DSA®) and this electrode material is widely used in many industrial processes namely water electrolysis, metal electro-winning, cathodic protection and electro-organic synthesis due t ...

EPFL2010

Structure of nitrile-functionalized alkyltrifluoroborate salts

Paul Joseph Dyson, Zhaofu Fei, Dongbin Zhao

Two nitrile-functionalized alkyltriflouroborate anion based complexes [(Ph3P)(2)N][CH3CH(BF3)CH2CN] and [K(18-crown-6)][CH3CH(BF3)CH2CN] were synthesized and characterized by spectroscopic methods and single X-ray diffraction analysis. In the former comple ...

2005

Electronic and dielectric properties of a suboxide interlayer at the silicon-oxide interface in MOS devices

Alfredo Pasquarello

We study the electronic structure and the dielectric permittivity of ultrathin oxide layers on Si(I 00) substrates. By considering two different Si(l 00)-SiO2 interface models, we first show that the electronic structure in the interfacial oxide differs fr ...

2005

Promoting or preventing haloaryllithium isomerizations: differential basicities and solvent effects as the crucial variables

Christophe Heiss, Thierry Rausis

Deprotonation-triggered heavy halogen migrations should become a favorite tool in arene synthesis if their occurrence and outcome could be made predictable. Particularly attractive, though extremely rare, are stop-and-go situations where a first intermedia ...

2005

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