| Studies of Heterogeneous Hydrothermal Stripping from Iron—loaded Naphthenic Acid—Alcohol—Kerosen |
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| 引用本文： | 王兴尧,康晓红,谢慧琴,卢立柱. Studies of Heterogeneous Hydrothermal Stripping from Iron—loaded Naphthenic Acid—Alcohol—Kerosen[J]. 过程工程学报, 2003, 3(2): 109-115 |
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| 作者姓名： | 王兴尧 康晓红 谢慧琴 卢立柱 |
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| 作者单位： | Institute of Process Engineering，Chinese Academy of Sciences，Institute of Process Engineering，Chinese Academy of Sciences，Institute of Process Engineering，Chinese Academy of Sciences，Institute of Process Engineering，Chinese Academy of Sciences Beijing 100080，China，Beijing 100080，China，Beijing 100080，China，Beijing 100080，China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (No.: 59934080) |
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| 摘 要： | The technique of hydrothermal stripping from mixed aqueous-organic systems is a promising method for synthexizing oxide ceramic powdcrs for high-performance applications.Some factors influcncing heterogeneous hydrothermal stripping with water from iron-loaded organic phase of naphthenic acid-isooctyl alcohol-kerosenc,such as initial concentrations of iron and naphthenic acid,concentration of Fe2O3“seed”,temperature and time,were investigated.Baseed on the experimental results,the rate equation was established.Nano-ferric oxide powders were obtained by the technique of hydrothermal stripping from the iron-loaded organic phase.The results suggest that the heterogeneous hydrothermal stripping proceeds in 3 steps:adsorption of naphthenic acid dimers and naphthenic complex of iron onto the surface of “seed”,hydrolysis of adsorbed complex of iron,and condensation of hydrolyzed complex.The process activation energy is 115kJ/mol and the heterogeneous hydrothermal stripping is controlled by a chemical reaction(the hydrolysis of naphthenic complex of iron).
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| 关 键 词： | 水热作用 脱模 载铁 环烷酸 煤油 酒精 |
Studies of Heterogeneous Hydrothermal Stripping from Iron-loaded Naphthenic Acid-Alcohol-Kerosen |
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| XIE Hui-qin(. Studies of Heterogeneous Hydrothermal Stripping from Iron-loaded Naphthenic Acid-Alcohol-Kerosen[J]. Chinese Journal of Process Engineering, 2003, 3(2): 109-115 |
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| Authors: | XIE Hui-qin( |
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| Affiliation: | Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | The technique of hydrothermal stripping from mixed aqueous-organic systems is a promising method for synthesizing oxide ceramic powders for high-performance applications. Some factors influencing heterogeneous hydrothermal stripping with water from iron-loaded organic phase of naphthenic acid-isooctyl alcohol-kerosene, such as initial concentrations of iron and naphthenic acid, concentration of Fe2O3 "seed", temperature and time, were investigated. Based on the experimental results, the rate equation was established. Nano-ferric oxide powders were obtained by the technique of hydrothermal stripping from the iron-loaded organic phase. The results suggest that the heterogeneous hydrothermal stripping proceeds in 3 steps: adsorption of naphthenic acid dimers and naphthenic complex of iron onto the surface of "seed", hydrolysis of adsorbed complex of iron, and condensation of hydrolyzed complex. The process activation energy is 115 kJ/mol and the heterogeneous hydrothermal stripping is controlled by a chemical reaction(the hydrolysis of naphthenic complex of iron). |
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| Keywords: | iron-loaded organic phase heterogeneous hydrothermal stripping rate equation nano-ferric oxide |
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