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Scalable Room-Temperature Synthesis of a Hydrogen-Sieving Zeolitic Membrane on a Polymeric Support

Publications associées (36)

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Simulations d'une structure cristalline incommensurable à caractère désordonné

Eric Germaneau

Incommensurate crystal structures do not display three-dimensional periodicity. Discovered in the 1960's, a mathematical model has been established in 1974 only. Incommensurate structures belong to the big family of aperiodic structures. The modulation of ...

EPFL2008

Ab initio molecular dynamics simulations of liquid GeSe2 show that the first sharp diffraction peak in the concentration-concentration structure factor S-CC(k) is due to a sequence of connected fourfold rings. These subunits can be viewed as chains of edge ...

2007

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A series of imidazolium dicarboxylic acids have been prepd. from the reaction of the 1,3-bis(carboxymethyl)imidazolium zwitterion with the Bronsted acids HX (X = F, Br, Cl, ClO4). The structures of these acids have been established in the solid ...

2006

Electrochemical synthesis and magnetic properties of CoFe2O4 nanowire arrays

Jean-Philippe Ansermet

We report the preparation and magnetic properties of Co2FeO4nanowires grown by electrodeposition inside the pores of anodic aluminum oxide (AAO). The synthesis requires two successive steps: the electrodeposition of fairly amorphous Fe-Co oxides or hydroxi ...

Electrochemical Society2006

Synthesis, characterisation and catalytic properties of vanadium substituted mesoporous aluminophosphates

Albert Renken, Benoît Louis

Vanadium substituted mesoporous AlPO have been synthesized using structure-directing surfactant under hydrothermal synthesis conditions. The presence of V in the framework of AlPO has been established by ESR, XPS, UV-vis DRS and ICP-AES measurements. This ...

2005

Synthesis of ZSM-5 zeolite in fluoride media: an innovative approach to tailor both crystal size and acidity

Lioubov Kiwi, Benoît Louis

ZSM-5 zeolites were prepared at neutral pH by fluoride-mediated synthesis. The degree of crystallinity, the specific surface area and the crystal size are higher than those of the zeolites prepared under alkaline conditions. Moreover, by varying the F/Si r ...

2004

Synchrotron X-ray absorption of LaCoO3 perovskite

Rudolf Paul Wilhelm Jozef Struis

LaCoO3 perovskite was prepared at 700degreesC using citrate precursors. The product was then characterized with X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS). The powder XRD pattern indicates rhomboliedral (R (3) over barc) or its monocli ...

Elsevier2004

A Highly Stable Gadolinium Complex with a Fast, Associative Mechanism of Water Exchange

André Merbach, Lothar Helm, Gaëlle Nicolle

The stability and water exchange dynamics of gadolinium (GdIII) complexes are critical characteristics that determine their effectiveness as contrast agents for magnetic resonance imaging (MRI). A new heteropodal GdIII chelate, [Gd-TREN-bis(6-Me-HOPO)-(TAM ...

2003

The hetero-Diels-Alder addition of sulfur dioxide: The pseudo-chair conformation of a 4,5-dialkylsultine

Pierre Vogel, Dean Markovic

Even unsubstituted butadiene adds to sulfur dioxide in the hetero-Diels Alder mode more rapidly than in the chelotropic mode. The sultine can be observed in equilibrium with the diene and the sulfur dioxide only at low temperature and in the presence of CF ...

2003

Breakdown of intermediate-range order in liquid GeSe2 at high temperatures

Alfredo Pasquarello

The structure of Liquid GeSe2 at T = 1373 K has been investigated by first-principles molecular dynamics. The calculated total neutron structure factor is in good agreement with recent experimental data. We found that the disappearance with increasing temp ...

2000