Le Carbone Lorraine

Elf Aquitaine

Centre National De La Recherche Scientifique

Pechiney Recherche

Pierre Bou

Michel Pons

Lionel Vandenbulcke

Michel Moreau

Philippe Prades

Jean Jacques Guilleminot

Michel Coulon

David Rats

Renee Herbin

Alain Quilgars

Michel Moisan

An active composite, consisting of a compressed support and of at least one agent that is active with respect to a gas, the compressed support comprising recompressed expanded graphite having a relative density of between 0.02 and 1.5, is formed from a series of sheets superposed on top of one another. According to the invention, the active agent is dispersed between the sheets in the form of granules.

Active composite having a laminate structure comprising an active in the form of granules

Active composite having a laminate structure comprising an active agent

Active composite consisting of a compressed support and of at least one agent which is active towards a gas, the compressed support including recompressed expanded graphite which has a density of between 0.02 and 1.5. According to the invention the active composite is made up of a series of sheets superposed one above the other, the active agent being dispersed in the flakes.

Active composite with foliated structure and its use as reaction medium

A reactor for a chemical heat pump including a sealed container provided with a heating and cooling system and having an inside wall, and a solid reagent having an outer surface and disposed in the container, which solid reagent reacts reversibly with a reagent gas inside the container, the solid reagent having dimensions such that a space is defined between the outer surface of the solid reagent and the inside wall of the container. A fluid contact material occupies at least part of the space, the fluid contact material being a good conductor of heat and chemically inert relative to the solid reagent.

Chemical heat pump reactor with improved power

The surface treatment of carbonaceous material (1) is characterised in that a layer of SiC (2) is formed on the carbonaceous material (1) by thermochemical conversion of the carbonaceous material (1) by a precursor of Si (4) at a temperature which is higher than the temperature for the formation, from said precursor, of a gaseous reactive intermediate (generally SiO), so as to obtain a surface layer (3) permitting an adherent diamond deposit (3). Pieces which are at least locally coated with `SiC/diamond`.

Surface treatment of carbonaceous material for making a subsequent

Apparatus for depositing diamond on a substrate assisted by microwave plasma, comprising two zones, a plasma formation zone located in a waveguide and a diamond deposition zone located outside the waveguide. The apparatus includes means making it possible to form a stable plasma in the deposition zone, so as to considerably increase the substrate surface which can be treated.

Apparatus for diamond deposition by microwave plasma-assisted CVPD

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Soisy Sur Montmorency, France

Pierre Bou