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Sulfuric acid is produced from sulfur, oxygen and water via the conventional contact process (DCDA) or the wet sulfuric acid process (WSA).
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Sulfuric acid is prepared industrially by the reaction of water with sulfur trioxide (see sulfur oxide), which in turn is made by chemical combination of sulfur dioxide and oxygen either by the contact process or the chamber process.
- The Editors of Encyclopaedia Britannica
Sep 18, 2020 · Sulphuric Acid Manufacturing Process. The contact process involves three main steps. First step is oxidation of sulphur to sulphur dioxide. Second step is catalytic oxidation of sulphur dioxide to sulphur trioxide. Third step is hydration of sulphur trioxide to form Sulphuric Acid.
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May 11, 2018 · HOW IT IS MADE. The first commercially successful method for making sulfuric acid was developed in 1746 by English physician, chemist, and inventor John Roebuck (1718–1794). Roebuck's method is called the lead chamber process because the acid is made in large containers lined with lead.
Today, sulfuric acid is produced by a method known as the contact process in which SO 2 is oxidized to SO 3, which then reacts with water to give the acid. Oxidation of SO 2 requires a suitable catalyst, such as spongy platinum or sodium vanadate.
Sulfuric acid is by far the largest single product of the chemical industry. The chamber process for its preparation on the scale required by the Leblanc process might be regarded as the most important long-term contribution of the latter.
There are two major processes (lead chamber and contact) for production of sulfuric acid, and it is available commercially in a number of grades and concentrations.
