Jan Hendrik de Boer

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

Together with Anton Eduard van Arkel, de Boer developed a chemical transport reaction for titanium, zirconium, and hafnium known as the crystal bar process.

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.

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