US Patent on the Production of Ammonia
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| Audience/Grade: | College Freshman - Continuing Education |
| Discipline(s): |
Chemical, Biochemical, Biomolecular Engineering Chemistry History of Science and Technology |
| Learning Resource Type: | Reference - Article/Document |
| Media Type: | WWW |
| Author(s): | Fritz Haber, Robert Le Rossignol |
| Description: | Replication of text of patent. by Today in Science. "In 1910, a U.S. patent for the Production of Ammonia was issued to Fritz Haber and Robert Le Rossignol (No. 971,501). This process could produce ammonia on a large scale directly from its component gases, hydrogen and nitrogen, by passing a mixture of them over heated finely-divided osmium metal used as a catalyst. A typical pressure of 175 atmospheres and a temperature of 550 degrees C could easily give an 8% by volume yield of ammonia. Although nitrogen makes up 80% of the air, as a gas it is quite unreactive. Despite its ready availability, nitrogen gas had previously been difficult to combine in a chemical form. Once nitrogen has been chemically combined in the form of ammonia, many other nitrogen compounds can be made". Specification of Letters Patent. Application filed August 13, 1909. Serial No. 512,679. 971,501. Patented Sept. 27, 1910. |
| Rating: | No Rating |
| Related Resources | |
| Keywords: | ammonia, Fritz Haber, Robert Le Rossignol |
| Usage Tip | |
| Use of Resource: | History of technology. |
| Version Info | |
| Publication Date: | 2008 |
| Platform/Format: | WWW |
| Cost: | Free |
| Download URL: | http://www.todayinsci.com/Events/Patent/Ammonia971501.htm |
| Metadata: | IEEE LOM Record |
| Collection: |
NEEDS
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