NOVELTY - Producing hydrogen comprises: contacting a compound (C) comprising one or more silicon-hydrogen groups with an amine based catalyst in a solvent comprising an alcohol or an aqueous solution, hence forming hydrogen and a by-product (C1), where the amine based catalyst is an amine compound (1a), or a polymer-supported catalyst bearing one or more amine groups (2a); and recovering the obtained hydrogen.    USE - The composition is useful for producing hydrogen (claimed). The hydrogen is useful in portable and stationary fuels cells, and emissions control system for motor vehicles. The composition is useful: as a propellant or its precursor; as a fuel in a fuel cell; in an engine as nitrogen oxides (NOx) reducing agent or as a supplementary fuel; and in a battery. The hydrogen is useful to produce energy.    ADVANTAGE - The process produces: hydrogen in large amounts, with high yields, in a very short time and with very low production costs; hydrogen in one step from inexpensive commercially available products; and environmentally friendly by-product. The process can be easily scaled up. (C) is commercially available, easy to handle, stable to air and moisture, and can be stored for long periods of time without loss of activity. (C) has high hydrogen storage density.    DETAILED DESCRIPTION - Producing hydrogen comprises: contacting a compound (C) comprising one or more silicon-hydrogen groups with an amine based catalyst in a solvent comprising an alcohol or an aqueous solution, hence forming hydrogen and a by-product (C1), where the amine based catalyst is an amine compound of formula (R1aR1bR1cN) (1a), or a polymer-supported catalyst bearing one or more amine groups of formula (NR1aR1b) (2a); and recovering the obtained hydrogen.    R1a-R1c = H, 1-6C alkyl, 6-10C aryl, aralkyl, 5-7 membered heteroaryl or 5-7 membered heterocyclyl, where the alkyl or aryl groups are optionally substituted by 1-3 R1d, preferably R1a and R1b are H; and    R1d = Cl, Br, I, F, OH, 1-6C alkyl, 1-6C alkoxy, 6-10C aryl, aralkyl, NO2, NH2, CN or COOH.    INDEPENDENT CLAIMS are included for:    (1) a composition comprising (C), an amine based catalyst and a solvent; and    (2) a device for producing hydrogen comprising a reaction chamber comprising: (C)/ solvent mixture inlet; an hydrogen outlet; a by-product collector; and a surface intended to be in contact with (C)/solvent mixture, coated with the polymer supported catalyst.