Editing Contact process (section)

{{Short description|Industrial method of sulfuric acid production}}{{for|the stochastic process used to model population|Contact process (mathematics)}}{{More footnotes needed|date=May 2020}}
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<sub>2</sub>O<sub>5</sub>) has since been preferred.<ref>{{ cite web | title = History | url = http://www.ravensdown.co.nz/Resources/Education/History.htm | accessdate=March 1, 2010 | url-status=dead | archiveurl=https://web.archive.org/web/20100523153700/http://www.ravensdown.co.nz/Resources/Education/History.htm |archivedate=May 23, 2010 | publisher =Ravensdown}}</ref>