Chamber 2
Chamber 2 : An obsolete but previously very important process for making sulfuric acid. Invented by J. Roebuck in Birmingham, England in 1746, although the patent was not filed in Scotland until 1771. Progressively improved during the 19th century, and finally abandoned everywhere in favor of the Contact process by 1980. Essentially it was the gas-phase oxidation of sulfur dioxide to sulfur trioxide, catalyzed by oxides of nitrogen, conducted in a lead-lined chamber, followed by dissolution of the sulfur trioxide in water
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