Diamond Tennant

Diamond shown to be a form of carbon by S. Tennant who burned it and weighed the CO2 produced graphite had earlier been shown to be carbon by C, W, Scheele (1779) carbon recognized as essential for converting iron to steel (R,-A.-F de Reaumur and others in the late eighteenth century),... 

Carbon - the atomic number is 6 and the chemical symbol is C. The name derives from the Latin carbo for charcoal . It was known in prehistoric times in the form of charcoal and soot. In 1797, the English chemist Smithson Tennant proved that diamond is pure carbon. 

In 1796 Smithson Tennant Droved that equal weights of carbon and diamond, when burned with saltpeter, yielded equal amounts of carbon dioxide (258, 265). Three years later Guyton de Morveau and Louis Clouet produced cast steel by heating a 907-milligram diamond in a small crucible of wrought iron (24, 258, 266). As early as 1704 Sir Isaac Newton stated in his Optics that the diamond must be combustible, and in 1772 Lavoisier found this to be true (23). The English chemist Smithson Tennant proved in 1796 that it consists solely of carbon (24). ... 

Smithson Tennant proves that the diamond consists solely of carbon. 

Tennant was the first to show, in 1797, that graphite and diamond are composed of the same pure element - carbon. 

Proof that diamond is on allatropic form of carbon was given by lhc English chemist. Smithson Tennant, in 1797. 

Towards the end of the 18 century a British chemist, Smithson Tennant, showed that diamonds are composed of nothing but carbon a discovery that gave a more scientific direction to synthesis efforts. By the beginning of the 19 century, it was known that carbonaceous materials, heat and pressure are required for diamond formation. Finally, success in artificial synthesis was achieved in the middle of the 20 century by two routes the High Pressure High Temperature (HPHT) route leading to the formation of diamond grit and the Low Pressure... 

It was established that diamond is an allotrope of carbon by Tennant in 1797 [1]. This led to many attempts to crystallize diamond using various carbonaceous starting materials, but it was not until about a century and a half later that successful synthesis was proven, as referred to in Section 1.1.3. The first clear success was by a Swedish group at the ASEA Company in February 1953 [2]. This was followed by the General Electric Company in December 1954 [3]. The early attempts and the subsequent successes are well reviewed [4—6]. 

In 1797 S. Tennant discovered that combustion of equal amounts of diamond and graphite liberates equal amounts of carbon dioxide in 1799 L. Guyton de Morveau confirmed that carbon is the only constituent of diamond, graphite, and coke. Twenty years later he succeeded in transforming diamond into graphite and then into carbon dioxide by careful heating. But the reverse transformation of graphite into... 

Tennant, Smithson (1761-1815) English chemist who proved by burning a diamond that it was a form of carbon and, while studying platinum for commercial purposes, isolated two new elements, iridium and osmium. 

The discovery by Lavoisier and Tennant in the late 1700s that diamond was a form of carbon stimulated a number of attempts to synthesize diamond from graphite (obviously a cheaper and much more plentiful form of carbon). Because natural diamonds were formed deep within the earth, it was natural for scientists to assume that conditions of elevated temperatures and pressures would be required. Various attempts were made during the 1800s and early 1900s, but none were successful. ... 

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