Systems and methods for production, storage, and transportation of hydrogen

A process comprising:

• oxidizing a reduced metal oxide in the presence of air under suitable conditions to produce oxygen depleted air and an oxidized metal oxide wherein the oxidizing is conducted in a fluidized bed combustor;
• and
• dehydrogenating a liquid organic hydrogen carrier in a liquid organic hydrogen carrier dehydrogenation reactor under dehydrogenation conditions to form H2 and an at least partially dehydrogenated liquid organic hydrogen carrier;
• wherein the fluidized bed combustor is thermally coupled to the liquid organic hydrogen carrier dehydrogenation reactor such that at least a portion of heat generated by the fluidized bed combustor may be transferred to the liquid organic hydrogen carrier dehydrogenation reactor;
• and
• wherein the liquid organic hydrogen carrier dehydrogenation reactor is a closed system with respect to the fluidized bed combustor;
• and
• wherein the liquid organic hydrogen carrier dehydrogenation reactor is submerged within and surrounded by the fluidized bed combustor.