zinc, zinc, oxide, cycle, chemical, reactions, zinc, zinc, oxide, cycle, cycle, step, thermochemical, cycle, based, zinc, zinc, oxide, hydrogen, production, with, typical, efficiency, around, contents, process, description, also, references, external, linkspro. For chemical reactions the zinc zinc oxide cycle or Zn ZnO cycle is a two step thermochemical cycle based on zinc and zinc oxide 1 for hydrogen production 2 with a typical efficiency around 40 3 Contents 1 Process description 2 See also 3 References 4 External linksProcess description EditThe thermochemical two step water splitting process uses redox systems 4 Dissociation ZnO Zn 1 2 O2 Hydrolysis Zn H2O ZnO H2For the first endothermic step concentrating solar power is used in which zinc oxide is thermally dissociated at 1 900 C 3 450 F into zinc and oxygen In the second non solar exothermic step zinc reacts at 427 C 801 F with water and produces hydrogen and zinc oxide The temperature level is realized by using a solar power tower and a set of heliostats to collect the solar thermal energy See also EditCerium IV oxide cerium III oxide cycle Copper chlorine cycle Hydrosol 2 Hybrid sulfur cycle Iron oxide cycle Sulfur iodine cycleReferences Edit Solar Hydrogen Production from a ZnO Zn Thermo chemical Cycle Archived July 24 2008 at the Wayback Machine Project PD10 Novel Method for solar hydrogen generation Archived February 5 2009 at the Wayback Machine Solar thermal ZnO decompositionExternal links EditH2 formation by zinc hydrolysis in a hot wall aerosol flow reactor Retrieved from https en wikipedia org w index php title Zinc zinc oxide cycle amp oldid 1094667891, wikipedia, wiki, book, books, library,
