球状カルサイト中空粒子の合成とその形態安定性

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書誌事項

タイトル別名
  • Synthesis of Spherical Calcite Hollow Particles and their Excellent Morphological Stability
  • キュウジョウ カルサイト チュウクウ リュウシ ノ ゴウセイ ト ソノ ケイタイ アンテイセイ

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抄録

Novel technique to prepare calcite hollow particles controlling heating process of vaterite hollow particles as base particles has been developed. The vaterite hollow particles, whose shell surface consists of nano-sized particles, were previously synthesized by dissolving of carbon dioxide gas in calcium chloride aqueous solution. Vaterite transforms into calcite phase at near 500℃. Activation energy of the transformation calculated by Arrhenius plot indicated that transformation of the vaterite hollow particle to calcite phase successfully occurred. With increase in heating temperature up to 600℃, surface roughness became smooth. However, spherical shape and hollow structure remained. In addition, the calcite hollow particle showed excellent morphological stability after immersion in water for one month.

収録刊行物

  • 粉体工学会誌

    粉体工学会誌 50 (9), 618-624, 2013

    一般社団法人 粉体工学会

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