Low Temperature Chlorination of Nd₂O₃ by Mechanochemical Method with CCl₄

Takayuki Nagai, Shin-Ichi Kitawaki, Nobuaki Sato

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan.
Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency, Naka, Japan.
Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency, Naka, Japan; Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan.

DOI: 10.4236/msa.2013.47051                

Abstract

For a chlorinating method at low temperature, the possibility of chlorination of Nd₂O₃ by a mechanochemical reaction with CCl₄ was studied using a planetary ball mill. The mechanochemical experiments were conducted by changing the pot materials, milling time, molar ratio of CCl₄/Nd₂O₃, and revolution speed. As the results of obtained products by X-ray diffractometry and Raman spectroscopy, it was confirmed that the chlorination to NdOCl from Nd₂O₃ with CCl₄ was advanced at room temperature in a zirconia or tungsten pot with balls. We found that an extension of the milling time and an increase of the number of ball were effective to the chlorination to NdOCl and that tensile stress remained in the milled powder by using a planetary ball mill.

Keywords

Mechanochemical Method; Carbon Tetrachloride; Neodymium Oxide; Low Temperature Chlorination; Neodymium Oxychloride; XRD; RAMAN Spectroscopy

Conflicts of Interest

The authors declare no conflicts of interest.

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