Concept

Molecular sieve

Related publications (72)

Dynamic Nuclear Polarization Efficiency Increased by Very Fast Magic Angle Spinning

David Lyndon Emsley, Moreno Lelli, Arthur César Pinon, Pierrick Berruyer, David Benjamin Roger Antoine Gajan

Dynamic nuclear polarization (DNP) has recently emerged as a tool to enhance the sensitivity of solid-state NMR experiments. However, so far high enhancements (>100) are limited to relatively low magnetic fields, and DNP at fields higher than 9.4 T signifi ...

American Chemical Society2017

Alkali uptake in calcium alumina silicate hydrate (C-A-S-H)

Karen Scrivener, Barbara Lothenbach, Émilie Michèle L'Hôpital

Uptake of the alkalis K and Na by calcium silicate hydrate (C-S-H) and calcium alumina silicate hydrate (C-A-S-H) of molar Ca/Si ratios = 0.6 to 1.6 and molar Al/Si ratio = 0 or 0.05 has been studied at 20 degrees C. Alkalis are thought to be bound in the ...

Pergamon-Elsevier Science Ltd2016

Monolayer Doping of Silicon through Grafting a Tailored Molecular Phosphorus Precursor onto Oxide-Passivated Silicon Surfaces

David Lyndon Emsley, Aaron James Rossini, Tsung-Han Lin

Monolayer doping (MLD) of silicon substrates at the nanoscale is a powerful method to provide controlled doses of dopants and defect-free materials. However, this approach requires the deposition of a thick SiO2 cap layer to limit dopant evaporation during ...

2016

Développement d’un dispositif de mesure du potentiel oxydant de l’air

Hugo Paul Marc Stieglitz, Alexis Lionel Laulagnet

La mesure dans l’air du potentiel oxydant – défini comme la capacité d’un environnement à générer des espèces réactives de l’oxygène (ROS) – dû à la présence de particules ultrafines constitue une approche intéressante car elle rend compte des effets prévi ...

2015

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

Davide Ferri, Elsa Callini, Rolf Erni

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

Molecular Adsorption Changes the Quantum Structure of Oxide-Supported Gold Nanoparticles: Chemisorption versus Physisorption

Wolf-Dieter Schneider

STM conductance spectroscopy and mapping has been used to analyze the impact of molecular adsorption on the quantized electronic structure of individual metal nanoparticles. For this purpose, isophorone and CO2, as prototype molecules for physisorptive and ...

American Physical Society2015

Toward Functional Type III [Fe]-Hydrogenase Biomimics for H2 Activation: Insights from Computation

Xile Hu, Matthew Wodrich, Kevin Alexander Murray

The chemistry of [Fe]-hydrogenase has attracted significant interest due to its ability to activate molecular hydrogen. The intriguing properties of this enzyme have prompted the synthesis of numerous small molecule mimics aimed at activating H2. Despite c ...

Wiley-V C H Verlag Gmbh2015

Hydrothermally-treated Na-X as efficient adsorbents for butadiene removal

Lioubov Kiwi, Jeremy Luterbacher, Florent Emmanuel Héroguel, Guillaume Bastien Baur, Jonathan Spring

An efficient adsorbent for butadiene was synthesized via soft hydrothermal treatment (2 h in boiling water followed by 1 h calcination at 573 K) of industrial Na-X. The adsorption capacity of the zeolite was studied in the low concentration range (20–300 p ...

Elsevier Science Sa2015

A new quantification method based on SEM-EDS to assess fly ash composition and study the reaction of its individual components in hydrating cement paste

Karen Scrivener, Cyrille Dunant, Mohsen Ben Haha, Pawel Tadeusz Durdzinski

Calcareous fly ashes are high-potential reactive residues for blended cements, but their qualification and use in concrete are hindered by heterogeneity and variability. Current characterization often fails to identify the dominant, most reactive, amorphou ...

Pergamon-Elsevier Science Ltd2015

Ensemble Effect Evidenced by CO Adsorption on the 3-Fold PdGa Surfaces

Harald Brune, Roland Widmer, Daniele Passerone, Jan Prinz

The atomic structure and composition of a catalyst's surface have a major influence on its performance regarding activity and selectivity. In this respect, intermetallic compounds are promising future catalyst materials, as their surfaces exhibit small and ...

Amer Chemical Soc2014

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