Study on Isothermal Formation Dynamics of Calcium Barium Sulphoaluminate Mineral

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• 作者：Yongbo Huang (1)
  Shoude Wang (1)
  Chenchen Gong (1)
  Yanting Zhao (1)
  Lingchao Lu (1)
  
• 关键词：Calcium barium sulphoaluminate mineral ; Formation dynamics ; Diffusion mechanism ; Apparent activation energy
• 刊名：Journal of Inorganic and Organometallic Polymers and Materials
• 出版年：2013
• 出版时间：September 2013
• 年：2013
• 卷：23
• 期：5
• 页码：1172-1176
• 全文大小：402KB
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• 作者单位：Yongbo Huang (1)
  Shoude Wang (1)
  Chenchen Gong (1)
  Yanting Zhao (1)
  Lingchao Lu (1)
  
  1. Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, 250022, China
  

文摘

The formation dynamics of calcium barium sulphoaluminate mineral with the composition of 2.75CaO·1.25BaO·3Al2O3·SO3 (C2.75B1.25A3 $\overline{\text{S}}$ S ˉ ) was studied. The results suggest that, under the preparative conditions, the formation of C2.75B1.25A3 $\overline{\text{S}}$ S ˉ mineral is controlled by a diffusion mechanism from 1,100 to 1,380?°C; and, the formation dynamics fits nicely with D 4?=?1???α/3???1???em class="a-plus-plus">α)2/3?=?Kt. From 1,100 to 1,300?°C, the apparent activation energy is 227.45?kJ?mol?. From 1,300 to 1,380?°C, the apparent activation energy decreases to 175.94?kJ?mol?, making the formation of C2.75B1.25A3 $\overline{\text{S}}$ S ˉ mineral faster and easier.