Concept

Air separation

Publications associées (37)

A process and a plant for hydrothermal synthetic natural gas (sng) production from waste biomass

François Maréchal, Frédéric Vogel, Martin Gassner

It is the aim of the present invention to provide a system and a process for hydrothermal SNG production from waste biomass having a design of the product separation that not only considers the grid quality specifications for SNG, but also the recovery of ...

2011

A process and a plant for hydrothermal SNG production from waste biomass

François Maréchal, Frédéric Vogel, Martin Gassner

2010

Molecular Simulation Studies of Separation of CO2/N-2, CO2/CH4, and CH4/N-2 by ZIFs

Berend Smit

In this work, molecular simulations were performed to evaluate the separation performance of two typical zeolitic imidazolate frameworks (ZIFs), ZIF-68 and ZIF-69, for CO2/N2, CO2/CH 4, and CH4/N2 mixtures. To do this, we first identified a suitable force ...

2010

Improved stability of La0.5Sr0.5FeO3 by Ta-doping for oxygen separation membrane application

Jan Van Herle, Stefan Diethelm, Defne Bayraktar

(La,Sr)FeO3 mixed conducting perovskites are considered as interesting candidates for oxygen separation membranes but they suffer from limited structural stability in a large oxygen partial pressure (pO2) gradient, because of their propensity for chemical ...

2009

Numerical simulation and optimization of multi-step batch membrane processes

A simple numerical technique is presented for batch membrane filtration design. The underlying model accounts for variable solute rejection coefficients, and it has a modular structure which permits to easily describe the batch process involving different ...

2008

Energy integration study of a multi-effect evaporator

François Maréchal, Zoé Périn-Levasseur, Vanessa Palese

In the pulp and paper industry, multi-effect evaporators are used to evaporate water from black liquor solutions to allow its recycle as chemicals and fuel for the process. The thermodynamic principle of the multi-effect evaporator consists in a serie of r ...

2008

Effect of rare-gas adsorption on the spin-orbit split bands of a surface alloy: Xe on Ag(111)-(root 3 x root 3) R30 degrees-Bi

Marco Grioni, Christian Reinhard Ast, Luca Moreschini

We have investigated by angle-resolved photoemission spectroscopy changes induced by Xe adsorption on the spin-orbit-split bands of the epitaxial Ag(111) (root 3x root 3)R30 degrees-Bi surface alloy. We observe an extensive backfolding of the alloy band st ...

2008

Optimization of mixed conducting perovskites for the application in dense ceramic oxygen separation membranes, used in partial oxidation of natural gas to synthesis gas

Jan Van Herle, Stefan Diethelm, Defne Bayraktar

The aim in this project was the optimization of LaFeO3-based perovskite materials for oxygen separation membranes (OSM). The work was carried out by the Laboratory for High Performance Ceramics, Empa in collaboration with the Laboratory for Industrial Ener ...

2007

Lanthanide luminescent mesomorphic complexes with macrocycles derived from diaza-18-crown-6

Rosario Scopelliti, Stéphane Suarez

Four tetracatenar (L1–L4) and one hexacatenar (L5) ligands, derived from the diaza-18-crown-6 framework, are synthesized and characterized. In these ligands, the amine functions are fitted with benzoyloxybenzyl linker groups, attached either with a carbony ...

2005

Liquid-core capsules as a tool in biotransformations

The aim of this thesis was to develop a new type of liquid-core capsules obtained by co-extrusion using the laminar jet break-up technique. These capsules, composed of an organic phase as the core and a hydrogel membrane, were meant to be applied as an in- ...

EPFL2005

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