Symbiofcell

Association Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels

Université Claude Bernard

Armienes

Centre Scientifique Et Technque Du Batiment

Produits Chimiques Auxiliares

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Sika Technology Ag

Association Pour La Recherche Et Le Developpement De Methodes Et Processus Industriels “Armines”

Patrick Achard

Rudolf Metkemeijer

Patrick Leroux

Benjamin De Grisard

Marcel Durant

Jean-Luc Chevalier

Bruno Chevalier

Redouane Begag

Elimame Elaloui

Gerard Pajonk

Marie Aulagnier

Arnaud Rigacci

Audrey Bellet

Thomas Echantillac

Mohamad Ibrahim

A purging circuit for purging an anodic compartment of a cell of a fuel cell, this circuit including: a capacity, forming a related volume at least equal to 500 ml, for containing and homogenising a recovery gas, including an inlet and an outlet; a first nonreturn valve to prevent the recovery gas from returning through the outlet and allowing gas to flow from the first outlet to an inlet of the compartment; a second nonreturn valve to prevent gas from being discharged from the capacity through the inlet; a pressure sensor able to measure the pressure of a fluid present in the circuit; a valve controlling the flow of a supply gas to and from the compartment as a function of data of the sensor and allowing gas to flow from the first nonreturn valve to the inlet of the compartment.

Purge circuit of a fuel cell

A purging circuit for purging an anodic compartment of a cell of a fuel cell, this circuit including: a capacity, forming a related volume at least equal to 500 ml, for containing and homogenising a recovery gas, including an inlet and an outlet; a first nonreturn valve to prevent the recovery gas from returning through the outlet and allowing gas to flow from the first outlet to an inlet of the compartment;a second nonreturn valve to prevent gas from being discharged from the capacity through the inlet;a pressure sensor able to measure the pressure of a fluid present in the circuit;a valve controlling the flow of a supply gas to and from the compartment as a function of data of the sensor and allowing gas to flow from the first nonreturn valve to the inlet of the compartment.

A process for the preparation of a silica aerogel that includes subjecting a mixture that includes an organosilicon compound and ethyl acetoacetate to hydrolysis and polycondensation in an acidic medium to obtain a transparent gel. The organic solvent is substituted by liquid carbon dioxide and the carbon dioxide is evacuated under supercritical conditions of the carbon dioxide to obtain an aerogel.

Process for the preparation of monolithic silica aerogels

Growing community of inventors

Le Plan de Grasse, France

Patrick Achard