Mechanochemical synthesis of rare earth orthovanadates from R2O3 (R = rare earth elements) and V2O5 powders

Takatoshi Tojo, Qiwu Zhang, Fumio Saito

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Lanthanum oxide (La2O3) and vanadium pentoxide (V2O5) mixture was milled by planetary ball mill to investigate the formation of lanthanum orthovanadate (LaVO4) by mechanochemical reaction. The formation of LaVO4 during milling was monitored by a suite of analytical methods including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and inductivity coupled plasma-atomic emission spectrometry (ICP-AES). The LaVO4 powder prepared by 4 h milling consists of particles with size up to several microns and has specific surface area of 9.70 m2/g. The mechanochemical method can be applied to the synthesis of other rare earth orthovanadates (RVO4; R = Y, Nd, Sm, Gd, Dy and Er). RVO4 prepared by this method has both zircon-type low pressure phase and scheelite-type high pressure one.

Original languageEnglish
Pages (from-to)219-222
Number of pages4
JournalJournal of Alloys and Compounds
Volume427
Issue number1-2
DOIs
Publication statusPublished - 2007 Jan 16

Keywords

  • Mechanochemical reaction
  • Milling
  • Rare earth orthovanadate
  • Scheelite-type
  • Zircon-type

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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