Jan Hendrik de Boer

Jan Hendrik de Boer (March 19, 1899 – April 25, 1971) was a Dutch physicist and chemist.

De Boer was born in Ruinen, now De Wolden, and died in 's-Gravenzande. He studied at the University of Groningen and was later employed in industry.

Together with Anton Eduard van Arkel, de Boer developed a chemical transport reaction for titanium, zirconium, and hafnium. In a closed vessel the metal reacts with iodine at elevated temperature forming the iodide. At a tungsten filament of 1700 °C the reverse reaction occurs, and the iodine and the metal are set free. The metal forms a solid coating at the tungsten filament and the iodine can react with additional metal, resulting in a steady turnover.[1]

M + 2I2 (>400 °C) → MI4
MI4 (1700 °C) → M + 2I2

References

1. ^ van Arkel, A. E.; de Boer, J. H. (1925). "Darstellung von reinem Titanium-, Zirkonium-, Hafnium- und Thoriummetall". Zeitschrift für anorganische und allgemeine Chemie 148 (1): 345–350. doi:10.1002/zaac.19251480133.


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