Search results
Results From The WOW.Com Content Network
When sulfuric acid is above 300 °C (572 °F; ... "Chamber acid" and "tower acid" were the two concentrations of sulfuric acid produced by the lead chamber process, ...
The lead chamber process was an industrial method used to produce sulfuric acid in large quantities. It has been largely supplanted by the contact process.. In 1746 in Birmingham, England, John Roebuck began producing sulfuric acid in lead-lined chambers, which were stronger and less expensive and could be made much larger than the glass containers that had been used previously.
The contact process is a method of producing sulfuric acid in the high concentrations needed for industrial processes. Platinum was originally used as the catalyst for this reaction; however, because it is susceptible to reacting with arsenic impurities in the sulfur feedstock, vanadium(V) oxide (V 2 O 5) has since been preferred.
1670 – Robert Boyle produces hydrogen by reacting metals with acid. 1672 – "New Experiments touching the Relation between Flame and Air" by Robert Boyle. 1679 – Denis Papin – safety valve. 1700 – Nicolas Lemery shows that the gas produced in the sulfuric acid/iron reaction is explosive in air.
In 2010, the United States produced more sulfuric acid than any other inorganic industrial chemical. [90] The principal use for the acid is the extraction of phosphate ores for the production of fertilizer manufacturing. Other applications of sulfuric acid include oil refining, wastewater processing, and mineral extraction. [47]
Sulfuric acid was initially produced by the lead chamber process, but in 1890, a unit using the contact process was brought on stream, producing the acid at higher concentration (98% instead of 80%) and a lower cost.
According to Reuters calculations, based on scientific literature and reviewed by an explosives expert, 5,000 tons of nitric acid could be used to make 3,000 tons of RDX, enough to fill 500,000 ...
Oleum is produced in the contact process, where sulfur is oxidized to sulfur trioxide which is subsequently dissolved in concentrated sulfuric acid. [3] Sulfuric acid itself is regenerated by dilution of part of the oleum. The lead chamber process for sulfuric acid production was abandoned, partly because it could not produce sulfur trioxide or ...