Each Gregor and Klaproth labored with titanium compounds. The first important isolation of nearly pure titanium was completed in 1875 by Kirillov in Russia. Isolation from the pure metal was not demonstrated until 1910 when Matthew Hunter and his associates reacted titanium tetrachloride with sodium in the heated steel bomb. https://lukasikifw.frewwebs.com/36313413/examine-this-report-on-aluminum-oxide