Publications associées à Réacteur continu à écoulement segmenté pour la synthèse de poudres minérales par précipitation

Extents of Reaction and Mass Transfer in the Analysis of Chemical Reaction Systems

Monitoring, control and optimization of chemical reaction systems often requires in-depth analysis of the underlying reaction mechanisms. This dissertation investigates appropriate tools that facilitate the analysis of homogeneous and gas-liquid reaction s ...

EPFL2011

“Sandwich Reactor” for Heterogeneous Catalytic Processes: N2O Decomposition as a Case Study

Albert Renken, Lioubov Kiwi, Bryan Bromley

A novel “sandwich” microreactor designed as a thin (∼ 300

\mu

m) porous plate of sintered metal fibers (SMF), sandwiched between metallic plates is reported. The SMF surface was coated by Fe-ZSM-5 thin film (< 2

\mu

m) rendering a catalyst highly active ...

2008

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

Process and reactor for the manufacture of powders of inhalable medicaments

Paul Bowen, Jacques Lemaître, Nathalie Jongen, Marcel Donnet, Lucica Soare

The invention relates to an improved process for the production of powders of an inhalable medicament by crystallization from a supersaturated fluid containing said medicament, the method comprising passing along a tubular reactor(a) a segmented flow of th ...

2004

Production d'hydrogène dans un réacteur microstructuré

Pierre Reuse

The aim of this work was to operate the steam reforming of methanol and the total oxidation of methanol in a microstructured two-passage reactor. The steam reforming enables the production of hydrogen at relatively low temperatures (250 °C) with only a sma ...

EPFL2003

Développement de réacteurs microstructurés pour la conversion du propane en produits valorisés

Olivier Wolfrath

Industry requires continuously new chemical processes to convert raw materials to valuable products limiting the formation of by-products. Since a few years, an increasing interest has been given to the intensification of chemical processes. This represent ...

EPFL2001

Inline conversion monitoring in MMA high solid content polymerization process

Thierry Meyer, Frédéric Lavanchy

Inline conversion measurements in chem. reactions are in general and esp. in polymn. reactions necessary for process monitoring and control. For polymn. monitoring, the sound propagation (UPV) can be related to the texture of the bulk with a high accuracy. ...

2001

Optimization of a Semi-Batch Reaction System under Safety Constraints

Dominique Bonvin

OPTIMIZATION OF A SEMI-BATCH REACTION SYSTEM UNDER SAFETY CONSTRAINTS O. Ubrich+, B. Srinivasan*, F. Stoessel+, D. Bonvin* * Novartis Services AG, CH-4002 Basel, Switzerland Institut d’ utomatique, Ecole Polytechnique Fédérale de Lausanne A CH-1015, Lausan ...

1999

Production of Powders

Paul Bowen, Jacques Lemaître, Nathalie Jongen

Segmented flow comprising discrete volumes of a liquid reaction mixture separated by discrete volumes of immiscible fluid is passed through a tubular reactor for residence times sufficient to precipitate a powder product from the reaction mixture. USE-Manu ...

1997

Barium sulfate precipitation as model reaction for segregation studies at pilot scale

Albert Renken, Thierry Meyer

The pptn. of barium sulfate from a basic EDTA complex upon addn. of a small vol. of acid in a stirred-tank reactor was used as a model reaction to study the local state of micromixing. Limitations and modifications of this reaction are presented, and its a ...

Elsevier1992

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Extents of Reaction and Mass Transfer in the Analysis of Chemical Reaction Systems

“Sandwich Reactor” for Heterogeneous Catalytic Processes: N2O Decomposition as a Case Study

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

Process and reactor for the manufacture of powders of inhalable medicaments

Production d'hydrogène dans un réacteur microstructuré

Développement de réacteurs microstructurés pour la conversion du propane en produits valorisés

Inline conversion monitoring in MMA high solid content polymerization process

Optimization of a Semi-Batch Reaction System under Safety Constraints

Production of Powders

Barium sulfate precipitation as model reaction for segregation studies at pilot scale

Production d'hydrogène dans un réacteur microstructuré

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

Process and reactor for the manufacture of powders of inhalable medicaments

Production of Powders

“Sandwich Reactor” for Heterogeneous Catalytic Processes: N2O Decomposition as a Case Study

Extents of Reaction and Mass Transfer in the Analysis of Chemical Reaction Systems

Développement de réacteurs microstructurés pour la conversion du propane en produits valorisés

Barium sulfate precipitation as model reaction for segregation studies at pilot scale

Inline conversion monitoring in MMA high solid content polymerization process

Optimization of a Semi-Batch Reaction System under Safety Constraints