| 均匀橄榄状α-Fe_2O_3胶体粒子成长的动力学分析 |
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| 引用本文： | 张玉亭,吴斗思.均匀橄榄状α-Fe_2O_3胶体粒子成长的动力学分析[J].天津工业大学学报,1991(1). |
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| 作者姓名： | 张玉亭 吴斗思 |
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| 作者单位： | 天津纺织工学院纺化系，天津纺织工学院纺化系 |
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| 基金项目： | 自然科学基金资助,项目编号化学2860108 |
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| 摘 要： | 本文对硝酸铁的酸性溶液当存在少量草酸时升温水解而生成均匀橄榄状α—Fe_2O_3胶体粒子的动力学进行了分析。按照 Nielsen 时矩(Chronomal)理论,晶体的成长过程符合二级多核层表面反应控制机理,并由此求出速度常数。计算的表面控制过程的活化能值表明,草酸参与了三价铁离子的络合过程。
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| 关 键 词： | 草酸 成长机理 三氧化二铁 表面反应 |
Growth Mechanism of Uniform Olivery Hematite Colloidal Particles |
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| Yuting Zhang Dousi Wu.Growth Mechanism of Uniform Olivery Hematite Colloidal Particles[J].Journal of Tianjin Polytechnic University,1991(1). |
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| Authors: | Yuting Zhang Dousi Wu |
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| Affiliation: | Dept of Textile Chemical Engineering Science |
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| Abstract: | The growth mechanism of uniform olivery hematite colloidal particles formed by the hydrolysis of the ferricnitrate in the presence of oxalic acid at elevated temperature was discussed.Growth of the crystal is though to occur via surface reaction control with ki- netic order 2 and its rate constants were calculated by using Nielsen Chronomal theory. Activation energy of surface controlled growth indicated that oxalic acid complexes ferric ions. |
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| Keywords: | oxalic acid growth machanism hematite surface reaction |
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