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摘要
利用过量浸渍法制备了Fe-ZSM-5催化剂,考察制备条件和反应条件对Fe-ZSM-5催化剂在甲基橙溶液中降解过程的影响,同时用XRD和XPS对催化剂的表面性质进行表征。结果表明,Fe2O3是催化剂的主要活性位,能够显著提高甲基橙催化降解的效果;制备条件和反应条件对Fe-ZSM-5催化降解反应均具有较大的影响。最佳制备条件为:煅烧温度为400℃,Fe负载量为1%;最佳反应工艺条件为:催化剂质量为1.5 g,Fe与H2O2摩尔比为1:6,pH为3。
Abstract
Fe-ZSM-5 catalyst is prepared by means of overdose dip-molding method.The degradation process of methyl orange solution is used to evaluate the effects of preparation conditions for Fe-ZSM-5 catalyst and reaction conditions.Characterization on surface property of the catalyst is conducted by means of XRD and XPS.Experimental results show that Fe2O3 is the major active sites of the catalyst and can promote remarkably the degradation efficiency of methyl orange.The preparation conditions for Fe-ZSM-5 catalyst and reaction conditions both have significant influences on the degradation reaction.The optimal preparation conditions include a calcination temperature of 400℃ and 1% Fe loading amount,while the optimal reaction conditions are as follows:the adding amount of catalyst is 1.5 g,the molar ratio of Fe to H2O2 is 1:6 and pH is 3.
关键词
ZSM-5分子筛
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非均相Fenton
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Fe-ZSM-5催化剂
Key words
ZSM-5 molecular
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heterogeneous Fenton system
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Fe-ZSM-5 catalyst
Author summay
陈嘉瑾(1997-),男,本科在读,研究方向为水处理技术,540126337@qq.com
Fe-ZSM-5催化剂的制备及其在芬顿体系中的应用研究[J].
现代化工, 2019, 39(2): 154-158 DOI:10.16606/j.cnki.issn0253-4320.2019.02.034