| 钙矾石吸附水的模型及等温式 |
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| 引用本文： | 郭子成,孙淑巧,李建军,陈贤拓. 钙矾石吸附水的模型及等温式[J]. 物理化学学报, 2000, 16(7): 667-671. DOI: 10.3866/PKU.WHXB20000717 |
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| 作者姓名： | 郭子成 孙淑巧 李建军 陈贤拓 |
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| 作者单位： | Department of Chemical Engineering,Heibei University of Science and Technology,Shijiazhuang 050018 |
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| 摘 要： | 钙矾石３ＣａＯ·Ａｌ２Ｏ３·３ＣａＳＯ４·３２Ｈ２Ｏ是水泥熟料水化的重要产物．它易被空气中的ＣＯ２ 分解，常温下的分解反应为３ＣａＯ·Ａｌ２Ｏ３·３ＣａＳＯ４·３２Ｈ２Ｏ ３ＣＯ２ →３ＣａＣＯ３ Ａｌ２Ｏ３·ｘＨ２Ｏ ３（ＣａＳＯ４·２Ｈ２Ｏ） （２６ -ｘ）Ｈ２Ｏ分解机理［１ ,２］是：Ｈ２Ｏ先吸附在钙矾石表面的活性中心上，吸附态水再吸收ＣＯ２ 成为Ｈ２ＣＯ３ ，然后碳酸与钙矾石反应，实现碳化（即分解）．其分解速率［３］为ｖ＝ｋｐｃｏ２ ｐＨ２ｏ（１）可见水的吸附是钙矾石碳化分解的关键步骤，因此探讨…
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| 关 键 词： | 钙矾石 吸附模型 等温方程 特性方程 |
| 收稿时间： | 1999-10-18 |
| 修稿时间： | 2000-02-16 |
Adsorptive Model and Isotherm of Water on Ettringite |
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| Guo Zicheng Sun Shuqiao Li Jianjun Chen Xiantuo. Adsorptive Model and Isotherm of Water on Ettringite[J]. Acta Physico-Chimica Sinica, 2000, 16(7): 667-671. DOI: 10.3866/PKU.WHXB20000717 |
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| Authors: | Guo Zicheng Sun Shuqiao Li Jianjun Chen Xiantuo |
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| Affiliation: | Department of Chemical Engineering,Heibei University of Science and Technology,Shijiazhuang 050018 |
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| Abstract: | The adsorption isotherm of water on ettringite was determined by an automatic microelectronic thermobalance. The adsorptive behavior of water on ettringite was analyzed by the experimental results. A modified Langmuir model of adsorption was used and the isotherm equation was derived. A characteristic equation for adsorption of water on ettringite was obtained by simulation with experimental data. Each adsorption isotherm at temperature 10-40 ℃could be derived conveniently from the characteristic equation. |
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| Keywords: | Ettringite Water adsorption Model Isotherm equation Characteristic equation Character and supplementary difference sets$$$$ LOU Liantang 1 XIA Mingyuan 2 ZUO Guoxin 2 (1.Department of Basic Courses Wuhan Ins |
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