| 摘要 |
A water-soluble, inorganic thiosulfate compound is reduced to the corresponding sulfide compound by contacting an aqueous solution of thiosulfate compound and hydrogen with a catalyst, comprising a catalytically effective amount of cobalt sulfide combined with a porous carrier material, at reduction conditions. Principal utility of this treatment procedure is associated with the clean-up or regeneration of aqueous streams containing undesired thiosulfate compounds so that they can be reused in the process which originally produced them or discharged them into a suitable sewer without causing a pollution problem. Key feature of the disclosed method is the use of a unique catalyst which has extraordinary activity for converting thiosulfate to sulfide in an aqueous solution when hydrogen is utilized as the reducing agent.
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