Investigation of the Structure of Neodymium-Di-(2-Ethylhexyl) Phosphoric Acid Combinations Using Electrospray lonization and Matrix-Assisted Laser Desorption Ionization Mass Spectrometry and Nuclear Magnetic Resonance Spectroscopy

From: Metallurgical and Materials Transactions | Date: August 1, 2005| Author: ; Ditze, Andrà Et al; Fà Schwerdtfeger, Klaus; © ¼ rmeier, Sven; Scharf, Christiane | Copyright information

Neodymium-di-(2-ethylhexyl) phosphoric acid (DEHPA) species forming in the organic phase during solvent extraction of neodymium with solutions of DEHPA have been studied. Two samples were prepared: one with a low molar ratio of neodymium to DEHPA, which is liquid and clear, and the other with a high molar ratio of neodymium to DEHPA (complete loading), which has the consistency of a gel. Electrospray ionization (ESI) and matrix-assisted laser desorption ionization (MALDI) mass spectrometric i...

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