Process for Producing Hydrogen from Water Using Cobalt and Barium Compounds and Compositions Useful Therein

摘要

A thermochemical process for producing hydrogen comprises the step of reacting CoO with BaO or Ba(OH) sub 2 in the presence of steam to produce H sub 2 and novel double oxides of Ba and Co having the empirical formulas BaCoO sub 2 . sub 33 and Ba sub 2 CoO sub 3 . sub 33 . The double oxide can be reacted with H sub 2 O to form Co sub 3 O sub 4 and Ba(OH) sub 2 which can be recycled to the original reaction. The Co sub 3 O sub 4 is converted to CoO by either of two procedures. In one embodiment Co sub 3 O sub 4 is heated, preferably in steam, to form CoO. In another embodiment Co sub 3 O sub 4 is reacted with aqueous HCl solution to produce CoCl sub 2 and Cl sub 2 . The CoCl sub 2 is reacted with H sub 2 O to form CoO and HCl and the CoO is recycled to the initial reaction step. The Cl sub 2 can be reacted with H sub 2 O to produce HCl. HCl can be recycled for reaction with Co sub 3 O sub 4 . (ERA citation 04:049591)