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化学学报
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化学学报 ›› 1979, Vol. 37 ›› Issue (1): 75-77. 上一篇    

研究简报

圆形纸层析法的研究Ⅷ.铌和钽的分离

毛志翔, 陈启琪   

  1. 浙江医科大学
  • 投稿日期:1978-03-23 发布日期:2013-06-03

STUDIES ON CIRCULAR PAPER CHROMATOGRAPHY——Ⅷ.THE SEPARATION OF NIOBIUM AND TANTALUM

MAO CHIE-HSIANG, CHEN CHI-CHI   

  1. The Medical College of Chekiang, Hangchow
  • Received:1978-03-23 Published:2013-06-03

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利用纸层析法分离铌和钽,前人已有报导,其中丁酮-氢氟酸是一个分离铌和钽的有效展开剂.但因需用非玻璃设备,以致往往受到限制.为此,我们进行了寻找新展开剂的探索,根据这两个元素的络合性质,选用了硫氰酸钾、柠檬酸、酒石酸、盐酸羟胺等作为络合剂,用丙酮、丁酮和戊酮的盐酸溶液以圆形纸层析法进行展开.结果找出(1)丙酮-盐酸-硫氰酸钾(10%)(8:1:2.5)和(2)丙酮-盐酸-柠檬酸(10%)(8:1:1)两种混合液都是分离铌和钽的良好展开剂.

It was shown that the following two solvent systems: (1) acetone-hydrochlorio acid-potassium thiocyanate (10%)(8:1:2.5) and (2) acetone-hydrochloric acid-citrio acid (10%) (8:1:1)，were satisfactory for the separation of niobium and tantalum by the circular paper chromatography on Hsin-Hua No.1 filter paper.Tantalum remained almost at the original spot, and niobium was near the front.Increasing the concentraLion of hydrochloric acid from 1 to 12N in both solvent systems did not affect the Rf value of tantalum but increased that of niobium greatly.The optimum acidity for the separation was found to be 4 to 8N.