Solar hydrogen production via a two-step thermochemical process based on MgO/Mg redox reactions—Thermodynamic and kinetic analyses

Investigation of hydrogen production reaction kinetics for an iron-silica magnetically stabilized porous structure

“…They also found that the rate of the reduction of Fe 3 O 4 with H 2 gas is systematically higher than that reduced by CO within the temperature range considered. Gá lvez et al [13] investigated the solar hydrogen production of a two-step water-splitting thermochemical looping process utilizing MgO/Mg redox cycles. The reaction rates for both redox steps were very well described by both a diffusion controlled reaction kinetic model or the shrinking core kinetic (boundary-controlled reaction) model.…”

Hydrogen production via thermochemical water splitting

“…Several chemical aspects of the thermal dissociation of ZnO have been investigated (Palumbo et al, 1998). Work originally focused mostly on the application of this cycle for WS and hydrogen generation, but investigations into CDS have come into play (Galvez, Frei, Albisetti, Lunardi, & Steinfeld, 2008;Loutzenhiser, Elena Galvez, Hischier, Graf, & Steinfeld, 2010;Steinfeld, 2002).…”

Thermochemical hydrogen generation of indium oxide thin films

“…Therefore, a number of studies have been conducted with the aim of generating hydrogen using metal oxides that exhibit these characteristics, such as ZnO, MgO, SnO 2 , and Fe 2 O 3 . [7][8][9][10] Thermochemical water splitting using metal oxide materials involves the following processes: vaporized water molecules react with oxygen vacancies present in the metal oxide materials, releasing a hydrogen gas and thus regenerating oxygen vacancies. The key challenge associated with thermochemical hydrogen generation lies in the synthesis of oxide materials with abundant oxygen vacancies for efficient hydrogen generation.…”