In prehistoric times, humans have used clay containing aluminum compounds (Al? o？ 2SiO？ 2H？ O) making pottery. The content of aluminum in the crust ranks third after oxygen and silicon. However, due to the weak oxidation of aluminum compounds, aluminum is not easy to be reduced from its compounds, so it is too late to separate metallic aluminum.
After Italian physicist Volta invented the battery, David tried to separate aluminum from bauxite by current, but failed. However, he suggested that it be named "alumium", later changed to "Alumnium" and soon changed to Aluminum. This word form is very common all over the world, except in North America, the American Chemical Society decided to use "aluminum" in its publication 1925.
Danish chemist Oster used dilute potassium amalgam to react with aluminum chloride for the first time to separate impure aluminum. 1827 German chemist Ulf repeated Oster's experiment and constantly improved the method of making aluminum. 1854, German chemist De Ville reduced aluminum chloride with sodium instead of potassium to produce aluminum ingots. ?
In the later period, aluminum was a treasure enjoyed by emperors and nobles. French emperor Charles Louis Napolé on Bonaparte used an aluminum fork at the banquet; The king of Thailand uses an aluminum watch chain. At the Paris Expo in 1855, it was exhibited with the crown jewels, and the label said "silver from clay". 1889, Mendeleev was also given vases and cups made of aluminum alloy by the London Chemical Society.
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Attempts to produce aluminum metal can be traced back to 1760. However, the first successful attempt was made in 1824 by Danish physicist and chemist hans christian oersted de. He reacted aluminum trichloride with potassium amalgam to produce a metal block that looked like tin. He showed his results and the new metal samples in 1825.
1827, repeated by German chemist Friedrich Waller? Rsted experiment, but no aluminum was found. (The reason for this inconsistency was discovered only in 192 1 year. He did a similar experiment in 1827, mixing aluminum trichloride and potassium to make aluminum powder. In 1845, he was able to make small pieces of metal and described some physical properties of this metal.
After many years, w? Heller is regarded as the discoverer of aluminum. Because Waller's method can't produce a lot of aluminum, there are still few metals; ? It is more expensive than gold.
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