| 摘要 |
PROBLEM TO BE SOLVED: To provide a low temperature hydrogen production method where, utilizing metal hydroxide or the like comprised in sludge or the like, hydrogen is easily and efficiently produced from natural hydrogen sulfide such as petroleum and sour gas and secondary hydrogen sulfide produced from industrial waste at a low temperature, and further, sulfur is stably fixed as metal sulfide, thus exhaust treatment for sulfur-containing compound gas contained in petroleum or the like, treatment for metallic waste containing iron hydroxide or the like, and the low temperature hydrogen production are consistently carried out. SOLUTION: A gaseous hydrogen sulfide is reacted with metal hydroxide or the like obtained from metallic waste in a low temperature region (from room temperature to 300°C), sulfur is fixed as metal polysulfide, and gaseous hydrogen is directly produced from hydrogen sulfide. By this reaction, sulfur is oxidized from -bivalence to -univalence, and hydrogen is reduced from +univalence to zerovalence, so as to produce the gaseous hydrogen. There are advantages that the quantity of sulfur to be fixed per metal is large owing to the production of polysulfide, and further, hydrogen can be obtained only in low temperature at which polysulfide can be stably obtained. COPYRIGHT: (C)2006,JPO&NCIPI
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