Aluminum Facts: 11-15 | History and Discovery
11. What Wöhler did was that he used potassium and reacted it with volatalized aluminum trichloride. Aluminum was produced as an end result but in very small quantities.
12. Berzelius in 1856 said that since Wöhler could not replicate Ørsted’s experiment but managed to isolate aluminum on his own using a separate method, Wöhler is the one who discovered aluminum in 1827.
13. So, Wöhler was given the credit of discovering the element. However, more recently came Fogh. He managed to repeat Ørsted’s experiment and found satisfactory results. So, priority of Ørsted increased and his position as the aluminum discoverer improved.
14. After Ørsted and Wöhler, aluminum was produced but only in small quantities because potassium that was used for the production was really expensive.
15. In 1854 came Henri Saint-Claire Deville from Paris in France. He managed to make the production of aluminum inexpensive by using sodium instead of potassium. In 1886 came chemists Paul Héroult from France and Charles Martin Hall from America. They independently devised the same method of isolating aluminum from alum using electrolysis. This method is today known as Hall-Héroult process.
Aluminum Facts: 16-20 | Characteristics of Aluminum
16. As far as harmful effects of Aluminum are concerned, there is no documented knowledge on this. However, scientists have the opinion that ingesting aluminum can lead to Alzheimer’s Disease.
17. Pure aluminum is silvery-white in color. It is a paramagnetic element. This means that its magnetism is very very weak under normal conditions and hence, it will not stick with magents.
18. The element is extremely reactive and this means that it is really hard to find pure aluminum metal in nature. However, there are rare instances where pure aluminum has been found in nature.
19. The element is highly ductile and has low density. It is also a very good (actually excellent) conductor of electricity.
20. Though aluminum is silvery-white in color in its pure form, what we usually see is a dull appearance when it is left out in open air. This happens because the element reacts with air to form aluminum oxide, which forms a protective coating on the element to prevent corrosion.