Results 21 to 30 of about 9,990 (162)

Predicting Catalyst Performance From Pt/CeO2 Redispersion Kinetics

Angewandte Chemie, EarlyView.
Unravelling kinetics of dynamic structural changes in catalysts is the key to predicting their catalytic properties. ETEM experiments reveal a continuous decrease in Pt particle size on cube‐shaped CeO2 under oxidizing conditions, changing from large nanoparticles to highly dispersed species.
Florian Maurer, Agustin Salcedo, Maria Casapu, David Loffreda, Arik Beck, Paolo Dolcet, Mimoun Aouine, Thierry Epicier, Stephane Loridant, Philippe Vernoux, Carine Michel, Jan‐Dierk Grunwaldt   +11 more
wiley   +2 more sources

Identification de matériaux par tomodensitométrie haute-énergie dans des objets bétonnés

e-Journal of Nondestructive Testing, 2023
L’identification des matériaux présents dans des objets volumineux comme des colis de déchets nucléaires nécessite la plupart du temps soit une opération destructive (carottage, découpe) pour les colis bétonnés, soit une intervention humaine (tri ...
Nicolas Estre, Daniel Eck, Frédéric Moutet, Emmanuel Payan, Alix Sardet, Roberto Gaggiano, Maarten van Geet   +6 more
doaj   +1 more source

A New Switchable Zr12 Oxocluster Based Large Pore Metal–Organic Framework Functionalized With Spin Crossover Complexes for Acetic Acid Colorimetric Sensing

Angewandte Chemie, EarlyView.
We present here (1)⊂MIP‐216(Zr), a new hybrid material composed of an FeII spin crossover complex (1) loaded in the pores of a new hydrophobic metal–organic framework (MIP‐216(Zr), that presents a high affinity toward acetic acid and acts as a highly sensitive colorimetric sensor of acetic acid vapor due to a spin state switching of the encapsulated ...
Emmelyne Cuza, Chenchen Cao, Abeer Mohtar, Mohammad Wahiduzzaman, William Shepard, Guillaume Maurin, Moises L. Pinto, Christian Serre, Antoine Tissot   +8 more
wiley   +2 more sources

Technique d’imagerie par rayons X en contraste de phase pour du contrôle de matériaux composite

e-Journal of Nondestructive Testing, 2023
Le contraste de phase en imagerie par rayons X permet de voir des détails de structures dans les matériaux peu absorbants. Plusieurs techniques existent mais l’interférométrie à décalage multilatérale (IDML) permet une mesure simultanée des gradients de
Laureen Guitard, Adrien Stolidi, Amélie Jarnac, Jérôme Primot   +3 more
doaj   +1 more source

Functionalization‐Mediated Synthesis of Bridge‐Coordinated Fe Atoms on MoS2 Nanosheets for PEM Water Electrolyzers

Angewandte Chemie, EarlyView.
We report a functionalization‐mediated strategy to synthesize robust iron (Fe) atoms selectively coordinated at bridge sites on molybdenum disulfide (MoS2) nanosheets. The resulting b‐Fe‐MoS2 catalyst exhibits enhanced activity and durability for the hydrogen evolution reaction in proton exchange membrane water electrolyzers compared to atop ...
Zakaria Anfar, Haitham Maslouh, Yuwei Yang, Mathilde Moderne, Jiefeng Liu, Loïc Assaud, Mikhael Bechelany, Chrystelle Salameh, Kun Qi, Yuying Meng, Huali Wu, Ji Li, Nicholas M. Bedford, Damien Voiry   +13 more
wiley   +2 more sources

Toward the Synthesis of Pestalustaine A: Structural Revision and Formation of Original Strained Tricyclic Architectures

Angewandte Chemie, EarlyView.
Our synthetic endeavor toward the total synthesis of the reported unprecedented tricyclic skeleton of the sesquiterpene pestalustaine A allowed us to perform divergent cyclizations of a bicyclo[4.4.1]undec‐3‐ene into complex tricyclic architectures and to revise the structure of the natural product.
Wei Cao, Alicia Ross, Jean‐Pierre Baltaze, Régis Guillot, Menglin Xu, Rongzhen Qin, Bingcheng Yang, Isabel Wong, Katayoon Formul, Cyrille Kouklovsky, Dean J. Tantillo, Vincent Gandon, Guillaume Vincent   +12 more
wiley   +2 more sources

The Diverse Ecology of Electronic Materials

Cahiers François Viète, 2017
Silicon has been the dominant material in microelectronics for a half century. Other materials, however, have subsidiary roles in microelectronics manufacturing. A few materials have even been promoted as replacements for silicon.
Cyrus C. M. Mody
doaj   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Dopant‐Tailored Matrices: A Crystal Engineering Strategy for Organic Room‐Temperature Phosphorescent Host–Guest Systems and Beyond

Angewandte Chemie, EarlyView.
Rather than selecting dopants to match a pre‐existing host matrix, the dopant‐tailored matrix strategy involves rational engineering of host matrices around a preselected class of dopants by targeting matrix packing motifs that promote synergistic host‐dopant interactions upon doping.
Catherine Demangeat, Raphael Rullan, Yipeng Tang, Bin Hu, Anthony D'Aléo, Tangui Le Bahers, Mohammad Esmail Alikhani, André‐Jean Attias   +7 more
wiley   +2 more sources

Making Sense of Chemistry: Synthetic Rubber in German Popular Scientific Literature (1929-2009)

Cahiers François Viète, 2017
The chapter analyzes the popular literature on synthetic rubber between 1929 and 2009 and asks how popular science books explained and interpreted rubber research and development to a general (German) public. How does popular literature produce different
Jens Soentgen
doaj   +1 more source