62 JOURNAIv OF THE 



1()3 

 1()() 



SEPARATION OF ZIRCONIUM FROM AIvUMINIUM. 

 /. By Sodu(]ii Hydros^'oi Carbonate, 



Having- noted the property of zirconium of being- re- 

 precipitated from a solution (at first precpitated but 

 soluble in an excess of sodium hydrog^en carbonate) on 

 boiling- with ammonium chloride, Pelouse and Fremy~« 

 proposed it as a method of separation of that metal from 

 aluminium. Ssverale 'xperiments were carried out by 

 the author of this paper, but the conclusion arrived at 

 was that it was a qualitative separation, which 

 could not be used for quantitative purposes. 



//. By Sodiuiii lodatc. 



Davis"'^ g-ives a neat and accurate method for the sep- 

 aration of zirconium and aluminium. The directions, as 

 g-iven by him, for the process must be most carefully 

 followed in order to obtain accurate results. Moreover 

 the process is inapplicable when iron, be it in a ferrous 

 or ferric condition, is present. The method therefore 

 offers but little of practical value in ordinary analysis. 



"Their" (aluminium and zirconium) solution in hydro- 

 chloric acid is treated with sodium carbonate until a 

 permanent precipitate is formed. This precipitate is 



ZvO. Traits de Chimie G^n^rale, III-523, 1854 Edition. 



21. Am. Ch. J., XI-26. 



22. Ibid. p. 29. 



