Abstract: The invention relates to a sorption-based gas storage structure (10) comprising: —a first layer (100) comprising a sorption-based storage material, —a second layer (200) comprising: º a first portion (201, 203) of the second layer, in contact with the first layer (100), and º a second portion (202) of the second layer.

Abstract: The invention relates to a sorptive gas storage device (1) comprising: a sorptive gas storage structure (10) comprising a sorptive gas storage material, said storage structure (10) having a circumferential edge (B), —heating means (3) configured to heat the storage material, and facilitate the desorption of the gas, said heating means (3) comprising: •a first heating part (30) arranged in the storage structure (10), at a distance from the circumferential edge (B), •a second heating part (32) arranged in the storage structure (10), at a distance from the circumferential edge (B) on the one hand and from the first heating part (30) on the other hand, the first heating part (30) and the second heating part (32) defining between them a space whereinto a first portion (11) of the storage structure (10) extends.

Abstract: A device for injecting a mixing gas into an exhaust gas exhaust line of an engine, the device comprising: one or more inlet openings, a plurality of walls comprising: o a first wall (31) and; o a second wall (32) having one or more outlet openings and being arranged downstream of the first wall, and means (36) for injecting the mixing gas between the first wall and the second wall, so as to allow the mixing gas and the exhaust gases to be mixed between the first wall and the second wall.