| 零价铁还原体系硝基苯初始浓度对还原过程的影响 |
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| 引用本文： | 张立国,罗燕群,张树喜,陈晓捷,刘蕾,张秋云. 零价铁还原体系硝基苯初始浓度对还原过程的影响[J]. 广东化工, 2011, 0(8): 247-248 |
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| 作者姓名： | 张立国 罗燕群 张树喜 陈晓捷 刘蕾 张秋云 |
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| 作者单位： | 华南师范大学化学与环境学院;华南理工大学环境科学与工程学院; |
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| 摘 要： | 为了考察在不同硝基苯初始浓度下，零价铁（zero-valentIron）还原硝基苯的反应动力学特性·分别配制初始浓度在15---400mg／L范围内的6种浓度的样品，通过液相色谱和气．质联用分析硝基苯和还原产物苯胺的浓度变化，以探讨初始浓度对零价铁还原硝基苯的影响。结果表明：pH为中性的条件下，对于不同初始浓度硝基苯，还原反应主要发生在前120mm，硝基苯的减少和苯胺的增加都里线性规律，零价铁还原硝基苯的反应过程符合假一级动力学模型：随着硝基苯初始浓度的升高，表观速率常数kobs值逐渐降低。120rain之后还原反应逐渐减慢，还原反应不符合假一级动力学模型。
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| 关 键 词： | 硝基苯 零价铁 还原 |
Effect of Initial Nitrobenzene Concentrations on Nitrobenzene Reduction by Zero-valent Iron |
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| Zhang Liguo,Luo Yanqun,Zhang Shuxi,Chen Xiaojie,Liu Lei,Zhang Qiuyun. Effect of Initial Nitrobenzene Concentrations on Nitrobenzene Reduction by Zero-valent Iron[J]. Guangdong Chemical Industry, 2011, 0(8): 247-248 |
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| Authors: | Zhang Liguo Luo Yanqun Zhang Shuxi Chen Xiaojie Liu Lei Zhang Qiuyun |
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| Affiliation: | Zhang Liguo1,Luo Yanqun1,Zhang Shuxi1,Chen Xiaojie1,Liu Lei2,Zhang Qiuyun1(1.School of Chemistry and Environment,South China Normal University,Guangzhou 510006,2.College of Environmental Science and Engineering,South China University of Technology,China) |
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| Abstract: | To examine the effect of initial concentration on nitrobenzene(NB) reduction by zero-valent iron(ZVI),the kinetics of NB reduction was investigated through preparing the NB solution with concentration of 15 to 400 mg/L.The concentrations of NB and aniline were measured using HPLC and GC-MS methods.The results showed that,at pH 7.0,the NB removal occurred mainly in the first 120 min for different initial NB concentrations,and meanwhile the NB reduction and aniline formation were both linearized.The NB reduct... |
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| Keywords: | nitrobenzene zero-valent iron reduction |
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