Oxidation of metal sulfites by iodine for use in thermochemical hydrogen cycles
Conference
·
OSTI ID:6173473
Thermochemical hydrogen cycles involving metal sulfates offer an alternative to sulfuric acid which is corrosion and has high energy requirements for drying prior to its thermal decomposition. The formation of such metal sulfates in conjunction with a low-temperature hydrogen formation step is discussed. The following reaction was studied: MgSO/sub 3/(c) + MgO(c) + I/sub 2/ (g) ..-->.. MgSO/sub 4/(c) + MgI/sub 2/(c). Although magnesium sulfite appears promising for this oxidation, a search was conducted for alternative metal sulfites which fit the following criteria for use: (a) sulfate must decompose in the temperature range available (< 1400/sup 0/K); (b) iodide must hydrolyze easily; and (c) salts must not be rare, toxic, or expensive. Lanthanum and titanium fit these criteria and will be investigated.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6173473
- Report Number(s):
- LA-UR-81-2477; CONF-810942-5; ON: DE81030253
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
08 HYDROGEN
080102* -- Hydrogen-- Production-- Thermochemical Processes
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ENTHALPY
FORMATION HEAT
HALOGENS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
IODINE
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRODUCTION
REACTION HEAT
SULFITES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
WATER
080102* -- Hydrogen-- Production-- Thermochemical Processes
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ENTHALPY
FORMATION HEAT
HALOGENS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
IODINE
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRODUCTION
REACTION HEAT
SULFITES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
WATER