Separation of Neodymium, Samarium, and Gadolinium by Liquid-liquid Chromatography.

Details

• Personal Author:
  Lindstrom RF ; Winget JO
• Description:
  Neodymium, samarium, and gadolinium were separated by a liquid- liquid chromatographic technique. Sulfuric acid was more effective than hydrochloric or nitric acid as an eluant with di(2-ethylhexyl) phosphoric acid (ehpa) as the stationary phase. Recovery of 45 percent of the neodymium as greater than 90 percent nd2o3, 84 percent of the samarium as greater than 99 percent sm2o3, and 50 percent of the gadolinium as greater than 99 percent gd2o3 was achieved. The degree of separation and the time required for the separation can be varied by changing the concentration of the eluant and the number of stages in the system. A system comprising a primary amine organic extractant and an aqueous eluant containing diethylenetriaminepentaacetic acid (dtpa) was less effective for separating the rare earths. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Journal Article
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  2
• NIOSHTIC Number:
  nn:10010125
• Citation:
  Proc 8th Rare Earth Research Conf 1970 Apr; 2:788-801
• Federal Fiscal Year:
  1970
• Peer Reviewed:
  False
• Source Full Name:
  Proc. 8th Rare Earth Research Conf., V. 2, April 1970, PP. 788-801
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/244409/cdc_244409_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]