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Name the catalyst used for conversion of SO2 to SOa in the contact process.How is oleum formed from SO3 in this process?2 |
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Answer» The contact process is the current method of producingsulfuric acidin the high concentrations needed for industrial processes. Platinum used to be the catalyst for this reaction; however, as it is susceptible to reacting with arsenic impurities in the sulfur feedstock, vanadium(V) oxide (V2O5) is now preferred.Oleumisproduced in the contact process, where sulfur is oxidized to sulfur trioxide which is subsequently dissolved in concentrated sulfuric acid. Sulfuric acid itself is regenerated by dilution of part of theoleum. |
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