Journal of Materials Science

, Volume 43, Issue 16, pp 5483–5488 | Cite as

Influence of lanthanum addition on preparation and powder properties of cobalt phosphates

  • Hiroaki OnodaEmail author
  • Keisuke Tange
  • Isao Tanaka


Transition metal phosphates are used as inorganic pigments; however, these materials had a weak point for acid and base resistance. Because lanthanum phosphate is insoluble in acidic and basic solution, the addition of lanthanum cation was tried to improve the acid and base resistance of cobalt phosphate pigment. The lanthanum doped cobalt phosphates were prepared from phosphoric acid, cobalt nitrate, and lanthanum nitrate solution. The additional effects of lanthanum cation were studied on the chemical composition, particle shape and size distribution, specific surface area, color, acid and base resistance of the precipitates, and their thermal products.


Lanthanum Base Resistance Cobalt Nitrate Rare Earth Cation Thermal Product 


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Department of Environment and Information Sciences, Faculty of Life and Environmental SciencesKyoto Prefectural UniversitySakyo-ku, KyotoJapan
  2. 2.Department of Applied Chemistry, Faculty of Science and EngineeringRitsumeikan UniversityKusatsuJapan
  3. 3.Department of Materials Science and Engineering, Faculty of EngineeringKyoto UniversitySakyo-ku, KyotoJapan

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