41 datasets found

The thermodynamical conditions inside the giant planets - like Jupiter, Saturn or many of the daily discovered exoplanets – are such that the interactions between...

The hydrogen risk generated by radiolysis of organic compounds during a nuclear waste transport is a major issue. The use of irreversible getters is considered to...

The main target of the thesis was to study the thermal integration of a magnesium hydride (MgH2) tank with an external heat source. At first, the evolution of material...

The hydrothermal alteration of a natural peridotite leads to a strong mineralogical change, the socalled ―serpentinization process‖. During this process, the Fe2+...

Thèse confidentielle jusqu'au 28 juin 2011, levée de la confidentialité mars 2012.

This thesis validates the concept of mixed electron/proton ceramic conductors to be used as anode materials for intermediate temperature steam electrolyzer. The...

The aim of this work is the understanding of the impact of acido-basic properties of oxide supports on the metal-support interaction as well as on the effects of...

The H+-SOFC (Protonic Conducting Solid Oxide Fuel Cell) based on a protonic conductingelectrolyte can represent an interesting alternative to the SOFC fuel cell....

Environmental standards on aircraff NOx emissions are strict. Technics for reducing them have drawbacks. Two options are explored in this study to supress them. The...

This work deals with hydrogen storage in metal hydrides. Many ways can be used for hydrogen storage. In order to secure high pressurized vessels (700 bar), a layer of...

In the current context to preserve the environment, we chose to use the Life Cycle Assessment (LCA) to assess the environmental performances of energy systems for...

National audience

National audience

Le mémoire porte sur l'expérimentation de piles à combustible (PAC) de type PEM (à membranes échangeuses de protons, ou à membranes polymères) destinées à trouver des...

Protons exchange membrane fuel cells (PEMFC) are sensitive to hydrogen and air pollutants. Thisstudy is focused on the impact of carbon monoxide (CO) and hydrogen...

This work has focused on the methane conversion by steam reforming and dry reforming processes, through new catalyst formulations in order to increase the selectivity...

In this thesis, we are interested in semiconducting properties of oxides formed on nickel base alloys. The aim is to demonstrate the effects of hydrogen partial...

157 pages

171 pages

Hydrothermal activity along the axis of mid-ocean ridges is a key driver for energy and matter transfer from the Earth’s interior to the ocean floor. Numerous...