Christian Friedrich Schönbein
Christian Friedrich Schönbein
Christian Friedrich Schönbein
Born 18 October 1799
Died 29 August 1868(aged 68)
Residence Germany, Switzerland Nationality German Institutions University of Basel Known for fuel cell, ozone, guncotton
Schönbein was born at Metzingen, Swabia. Around the age of 13 he was apprenticed to a chemical and pharmaceutical firm at Böblingen. Through his own efforts, he acquired sufficient scientific skills and knowledge to ask for, and receive, an examination by the professor of chemistry at Tübingen. Schönbein passed the exam and, after a series of moves and university studies, eventually acquired a position at the University of Basel in 1828, becoming a full professor in 1835. He remained there until his death in 1868, and was buried in Basel.
It was while doing experiments on the electrolysis of water at the University of Basel that Schönbein first began to notice a distinctive odor in his laboratory. This smell gave Schönbein the clue to the presence of a new product from his experiments. Because of the pronounced smell, Schönbein coined the term ‘ozone’ for the new gas, from the Greek word ‘ozein’, meaning ‘to smell’. Schönbein described his discoveries in publications in 1840. He later found that the smell of ozone was similar to that produced by the slow oxidation of white phosphorus.
The ozone smell Schönbein detected is the same as that occurring in the vicinity of a thunderstorm, an odor that indicates the presence of ozone in the atmosphere.
Although his wife had forbidden him to do so, Schönbein occasionally experimented at home in the kitchen. One day in 1845, when his wife was away, he spilled a mixture of nitric acid and sulfuric acid. After using his wife's cotton apron to mop it up, he hung the apron over the stove to dry, only to find that the cloth spontaneously ignited and burned so quickly that it seemed to disappear. Schönbein, in fact, had converted the cellulose of the apron, with the nitro groups (added from the nitric acid) serving as an internal source of oxygen; when heated, the cellulose was completely and suddenly oxidized.
Schönbein recognized the possibilities of the new compound. Ordinary black gunpowder, which had reigned supreme in the battlefield for the past 500 years, exploded into thick smoke, blackening the gunners, fouling cannons and small arms, and obscuring the battlefield. Nitrocellulose was perceived as a possible "smokeless powder" and a propellant for artillery shells thus it received the name of guncotton.
Attempts to manufacture guncotton for military use failed at first because the factories were prone to explode and, above all else, the burning speed of straight guncotton was always too high. It was not until 1884 that Paul Vieille tamed guncotton into a successful progressive smokeless gunpowder called Poudre B. Later on, in 1891, James Dewar and Frederick Augustus Abel also managed to transform gelatinized guncotton into a safe mixture, called cordite because it could be extruded into long thin cords before being dried.
- The Letters of Faraday and Schoenbein 1836-1862 London: Williams & Norgate 1899.
- The Letters of Jöns Jakob Berrelius and Christian Friedrich Schönbein, 1830-1847 London: Williams & Norgate 1900.
- ^ Oesper, Ralph E. (1929). "Christian Friedrich Schönbein". Journal of Chemical Education 6: 432–440. doi:10.1021/ed006p432.
- ^ Schönbein, C. F. (1838-1840). "Lecture of 13 March 1839". Ber. Verh. Nat. Ges. Basel 4: 58.
- ^ Schönbein, C. F. (1840). "On the Odour Accompanying Electricity and on the Probability of its Dependence on the Presence of a New Substance". Philosophical Magazine 17: 293–294.
- ^ See, for example, Schönbein, C. F. (1844). "On the Production of Ozone by Chemical Means". Philosophical Magazine 24: 466–467.
- Brown G. I. The Big Bang: A History of Explosives, Sutton Publishing; 1998 (ISBN 0750937920)
- Rubin, Mordecai B. (2001). "The History of Ozone. The Schönbein Period, 1839-1868". Bull. Hist. Chem. 26 (1). http://www.scs.uiuc.edu/~mainzv/HIST/awards/OPA%20Papers/2001-Rubin.pdf. Retrieved 2008-02-28.
- Meldola, R. (1900). "Christian Friedrich Schönbein, 1799–1868 Ein Blatt zur Geschichte des 19 Jahrhunderts". Nature 62 (1596): 97. doi:10.1038/062097a0.
- Hagenbach, Eduard (1868). Christian Friedrich Schoenbein: Programm. http://books.google.com/?id=qKE_AAAAcAAJ.
- Chisholm, Hugh, ed (1911). "Schönbein, Christian Friedrich". Encyclopædia Britannica (11th ed.). Cambridge University Press.
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Christian Friedrich Schönbein — Christian Friedrich Schönbein, 1857 Christian Friedrich Schönbein (* 18. Oktober 1799 in Metzingen; † 29. August 1868 in Baden Baden) war ein deutsch schweizerischer Chemiker. Er ist Entdecker des Ozons (1839), des Prinzips der Bre … Deutsch Wikipedia
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Christian Friedrich Schonbein — noun German chemist who discovered ozone and developed guncotton as a propellant in firearms (1799 1868) • Syn: ↑Schonbein, ↑Christian Schonbein • Instance Hypernyms: ↑chemist … Useful english dictionary
Christian Friedrich Schoenbein — Christian Schönbein Christian Schönbein Christian Friedrich Schönbein (8 octobre 1799 à Metzingen, Souabe, en Allemagne 2 août 1868 à Sauersberg, près de Baden Baden), chi … Wikipédia en Français
Schönbein , Christian Friedrich — (1799–1868) German chemist Schönbein was born at Metzingen in Germany. After studying at the universities of Tübingen and Erlangen, he took up an appointment at the University of Basel in 1828, staying there for the rest of his life. Many stories … Scientists
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Christian Schönbein — Christian Friedrich Schönbein 1857 Christian Friedrich Schönbein (* 18. Oktober 1799 in Metzingen; † 29. August 1868 in Baden Baden) war ein deutsch schweizerischer Chemiker. Nach einem Studium der Chemie in Erlangen und an der Sorbonne in Paris… … Deutsch Wikipedia
Schönbein — Christian Friedrich Schönbein 1857 Christian Friedrich Schönbein (* 18. Oktober 1799 in Metzingen; † 29. August 1868 in Baden Baden) war ein deutsch schweizerischer Chemiker. Nach einem Studium der Chemie in Erlangen und an der Sorbonne in Paris… … Deutsch Wikipedia
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