# Johann Wolfgang Döbereiner Biography

Scientist, Chemist (1780–1849)
German chemist Johann Wolfgang Döbereiner's observation of similarities among certain elements anticipated the development of the periodic system of elements.

## Synopsis

During the 1820s, Johann Wolfgang Döbereiner's experiments with hydrogen led the chemist J.J. Berzelius to develop the concept of catalysis. Toward the end of the decade Döbereiner found that the properties of bromine seem halfway between those of chlorine gas and the solid iodine. He also discovered the organic compound furfural and developed the separation of calcium and magnesium.

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