Concept

Chemical process

Related publications (104)

Chemical separations by bubble-assisted interphase mass-transfer

We show that when a small amount of heat is added close to a liquid-vapor interface of a captive gas bubble in a microchannel, interphase mass-transfer through the bubble can occur in a controlled manner with only a slight change in the temperature of the ...

2008

Er-doped Al2O3 thin films deposited by high-vacuum chemical vapor deposition (HV-CVD)

Patrik Willi Hoffmann, Xavier Multone

Erbium-doped amorphous aluminum oxide layers deposited on Si or oxidized silicon substrates are promising construction pieces for future monolytic integrated optoelectronics devices. In a novel high-vacuum chemical vapor deposition setup the alumina films ...

2008

Inferring thermodynamic properties from CCN activation experiments: Single-component and binary aerosols

Athanasios Nenes

This study presents a new method, Köhler Theory Analysis (KTA), to infer the molar volume and solubility of organic aerosol constituents. The method is based on measurements of surface tension, chemical composition, and CCN activity coupled with Köhler the ...

European Geosciences Union2007

Dynamics of Photoinduced Interfacial Electron Transfer and Charge Transport in Dye-Sensitized Mesoscopic Semiconductors

Jacques-Edouard Moser, Christophe Bauer, Joël Teuscher, Bernard Wenger, Verner Thorsmolle

Molecular systems designed for the conversion of solar energy offer ideal models in the study of the kinetics of light-induced electron transfer at surfaces. Due to their high porosity, nanocrystalline oxide semiconductor films allow investigations of inte ...

Schweizerische Chemische Gesellschaft2007

Structure-property relationships: Polymorphism, solvates, and clay behavior in the one-dimensional coordination polymer chains [Ag(L)(NO3)](H2O)n, L = ethanediyl bis(isonicotinate), n = 0, and 2

The system AgNO3 and L (L = ethanediyl bis(isonicotinate)) yielded so far five different compounds from a THF/H2O mixture (or acetonitrile) when reacted in a ratio 1:1. Three solvent-free compounds possess the same chemical composition, [Ag(L)NO3], but dif ...

2007

Microsensor for in situ flow measurements in benthic boundary layers at submillimeter resolution with extremely slow flow

Alfred Johny Wüest, Bernhard Wehrli

The currents in the lowest few millimeters of the bottom boundary layer of lakes are highly important for the dissipation of kinetic energy and for chemical processes such as oxygen transfer into the sediment. So far, no high-resolution flow velocity profi ...

Amer Soc Limnology Oceanography2007

Focused electron beam induced deposition of nickel

Patrik Willi Hoffmann, Benjamin Dwir, Giovanni Boero

Focused electron beam induced depositions of nickel-containing materials obtained by using bis(methylcyclopentadienyl)nickel(II) Ni(C5H4CH3)(2) and tetrakis(trifluorophosphine)nickel(0) Ni(PF3)(4) as precursors, were compared in terms of chemical compositi ...

2007

Development of reaction calorimetry applied to supercritical CO2 and methanol-CO2 critical mixture

Frédéric Lavanchy

The combination of reaction calorimetry and supercritical fluids as reactants and/or solvent holds great potential for the optimization of chemical processes using high pressure near-critical and/or supercritical mixtures. The very specific properties of s ...

EPFL2005

Microstructure and properties of hard layers formed by duplex surface treatment containing nickel and phosphorus on a titanium-base alloy

Philippe Buffat

Microstructure and chemical composition of the hard Ni–P–Ti layer formed on the Ti–6Al–4V alloy after duplex surface treatment were investigated by light microscopy, X-ray diffraction, scanning electron microscopy and analytical/high resolution transmissio ...

2005

Prédiction et compréhension de la densification des poudres commerciales d'alumine et de fer grâce à une approche par réseau de neurones artificiels

The influence of the properties of commercial powders on the densification during their packing, compaction and sintering process is still not understood in detail. With regard to the sintering process, neither the well-known sintering equation for the fir ...

EPFL2004

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.