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化学学报
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化学学报 ›› 1995, Vol. 53 ›› Issue (9): 855-860. 上一篇    下一篇

研究论文

钙矾石晶体内部碳化过程物理模型的研究

陈贤拓;邹瑞珍;陈霄榕;穆平   

  1. 河北轻化工学院化工系;天津大学化学工程系;河北师范大学实验中心
  • 发布日期:1995-09-15

Studies on physical model of carbonation process in ettringite crystal

CHEN XIANTUO;ZOU RUIZHEN;CHEN XIAORONG;MU PING   

  • Published:1995-09-15

PDF

459

被引次数

7 | 1

研究钙矾石晶体内部碳化过程的规律, 提出碳化初期是一维扩散控制, 中期符合裂变模型, 后期是一级反应控制。根据上述模型, 导出相应的钙矾石碳化动力学方程, 这些方程与实验数据相吻合。

关键词: 晶体, 动力学方程, 扫描电子显微镜, 钙钒石, 碳化, 物理模型, 河北省自然科学基金

The carbonation law in ettringite crystal is studied in this paper, and the following model is supposed, the unidimensional diffusion is the controlling step in the initial stage, the reaction accords with the fission model in the medium stage, and the controlling step is the first-order reaction in the later stage. The carbonation kinetic equations are derived from above model, and they fit well with empiric data.

Key words: CRYSTALS, KINETICS EQUATIONS, SCANNING ELECTRON MICROSCOPES, ENTRINGITE, CARBONIZATION, PHYSICAL MODELS

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