Abstract: A device includes a catalytic system and an electromagnetic system. The catalytic system defines a catalysis chamber and includes a catalyst of a reaction to generate a gas from a liquid. The catalyst is housed in the catalysis chamber. The electromagnetic system includes a coil and a rod mobile relative to the coil, the rod being fixed to the catalytic system and including a magnet and a core. The electromagnetic system is configured to move the rod relative to the coil when an electrical current is passed through the coil, so as to dispose the catalytic system in an open position in which the catalysis chamber is in fluidic communication with the outside. The catalytic system is disposed in a closed position in which the catalysis chamber is hermetically closed in the absence of an electrical current through the coil.

Abstract: Dihydrogen generator (5) comprising a chamber (10) and a catalytic system (15), the catalytic system being rigidly fastened to the chamber in a removable manner and comprising a catalysis housing (25) containing a catalyst (205) for the reaction for generating dihydrogen from a reagent (405) chosen from a hydride, a liquid organic hydrogen carrier and mixtures thereof, the chamber defining a chamber internal space (45), the catalysis housing being positioned at least partly in the chamber internal space.

Abstract: A dihydrogen generator (5) comprising a chamber (10), a reservoir (260) for containing a reagent and a catalytic system (15), the chamber being impervious to dihydrogen and defining an internal chamber space (45), the reservoir being housed in the internal chamber space and comprising a reservoir wall (270, 275) impervious to a liquid and permeable to dihydrogen, the catalytic system being disposed at least partly in the reservoir and comprising a catalyst (205) for the reaction that generates dihydrogen from the reagent, the chamber comprising a discharge valve (300) for withdrawing the dihydrogen from the internal chamber space, an injection valve (295) for injecting the liquid into the reservoir and a drain valve (460) for draining the liquid from the reservoir.

Abstract: A method for treating a polymer part comprising a step of bringing the part into contact with vapours of solvent(s), capable of at least partially solubilising the part, this contacting step being carried out under vacuum. Application of this method for modifying the roughness of the part and/or functionalising it.

Abstract: The composition, advantageously an emulsion or a foam, includes an internal phase dispersed in a hydrophilic continuous phase, the percentage of the internal phase being higher than 50%. The emulsion composition contains nanocrystals of a polysaccharide other than cellulose, advantageously chitin, that are located at the interface between the internal phase and the hydrophilic continuous phase.

Abstract: The present invention relates to a composition in the form of an emulsion, advantageously a Pickering emulsion, comprising a hydrophobic phase dispersed in an aqueous phase, which composition contains emulsifying particles capable of stabilizing said emulsion, at least some of said particles consisting of cellulose nanocrystals having an elongated shape, which have the following features: a length between 25 nm to 1 ?m, and a width between 5 to 30 nm.

Abstract: The composition, advantageously an emulsion or a foam, includes an internal phase dispersed in a hydrophilic continuous phase, the percentage of the internal phase being higher than 50%. The emulsion composition contains nanocrystals of a polysaccharide other than cellulose, advantageously chitin, that are located at the interface between the internal phase and the hydrophilic continuous phase.

Abstract: The invention relates to a method for producing an emulsion including a hydrophobic internal phase dispersed in a hydrophilic continuous phase, of the medium internal phase (MIPE) or high internal phase (HIPE) type, which has an internal phase percentage higher than 55%, comprising the following steps: a) producing an oil-in-water emulsion composition that has a hydrophobic phase/hydrophilic phase volume ratio of at least 5/95, including a step for incorporating cellulose nanocrystals into said hydrophilic phase, and a step for forming the emulsion by dispersing said hydrophobic phase in said hydrophilic phase, and b) producing an emulsion that has an internal phase percentage higher than 55%, including: b.1) a step for adding a volume of hydrophobic phase to the emulsion composition produced in Step a), and stirring the mixture thereby produced, and/or b.2) a step for concentrating the emulsion composition produced in Step a), by removing at least part of said hydrophilic phase.

Abstract: The present invention relates to a composition in the form of an emulsion, advantageously a Pickering emulsion, comprising a hydrophobic phase dispersed in an aqueous phase, which composition contains emulsifying particles capable of stabilizing said emulsion, at least some of said particles consisting of cellulose nanocrystals having an elongated shape, which have the following features: a length between 25 nm to 1 ?m, and a width between 5 to 30 nm.

Abstract: An improvement is described in all purpose liquid bathroom cleaning compositions which are especially effective in the prevention of soap scum buildup containing a zwitterionic surfactant, a glycol ether cosurfactant, an agent for the prevention of soap scum buildup and water.