Who first isolated crude aluminum in 1825?

The Danish physicist and chemist Hans Christian Ørsted is credited with the first isolation of crude aluminum in 1825. He achieved this by reducing aluminum chloride with potassium amalgam.123

While Sir Humphry Davy had previously attempted to extract the metal in 1807 and successfully prepared an iron-aluminum alloy in 1809, he was unable to isolate the pure metal. Following Ørsted's success, the German chemist Friedrich Wöhler later produced aluminum in the form of powder and small globules, which allowed for a more detailed determination of the element's physical properties.12