Bog iron used for the adsorption of H2S from coke oven gas is___________________?
Correct answer: B. An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)
- A. Iron impregnated with resin (usually Bakelite)
- B. An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)
- C. Carbon free iron
- D. None of these
Explanation
Bog iron is hydrated ferric oxide, commonly supported or mixed with sawdust to provide a porous contact mass. The ferric hydroxide reacts with or adsorbs hydrogen sulphide from coke-oven gas.
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