约翰·戈特利布·甘恩1745—1818

1773年至1817年，担任瑞典矿业委员会的化学家。甘恩很少愿意发表自己的科学发现，但是会经常与舍勒、Bergman以通信方式交流。甘恩的一个重要发现是二氧化锰与碳可生成单质锰，这使得他成为第一个分离出单质锰的人。

1784年，甘恩成为瑞典皇家科学院院士。

Johan Gottlieb Gahn (19 August 1745 – 8 December 1818) was a Swedish chemist and metallurgist who isolated manganese in 1774.

Early life

Gahn studied in Uppsala from 1762 to 1770 and became acquainted with chemists Torbern Bergman and Carl Wilhelm Scheele. 1770 he settled in Falun, where he introduced improvements in copper smelting, and participated in building up several factories, including those for vitriol, sulfur and red paint.

Career

From 1773 to 1817, Gahn served as the Board of Mines’ chemist; he received the title of bergmästare in 1782 and was appointed puisne member of the same board in 1784. In 1793, he became a member of the General Committee for State Affairs, which partly replaced the Privy Council of Sweden from 1789.

Scholarship

He was very reluctant to publish his scientific findings himself, but freely communicated them to Torbern Bergman and Carl Wilhelm Scheele. One of Gahn's discoveries was that manganese dioxide could be reduced to manganese metal using carbon, becoming the first to isolate this element in its metal form.

Honorifics

In 1784, Gahn was elected a member of the Royal Swedish Academy of Sciences, and in 1808 foreign member of the Bavarian Academy of Sciences and Humanities.