| MnOx/ACF负载型催化剂常温催化氧化二氯甲烷 |
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| 引用本文： | 薛花,崔家浩,邢中鹏,赵丹,丁辉.MnOx/ACF负载型催化剂常温催化氧化二氯甲烷[J].化工环保,2021,41(1):77-82. |
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| 作者姓名： | 薛花 崔家浩 邢中鹏 赵丹 丁辉 |
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| 作者单位： | 1.天津大学 化工学院,天津 300072;2.国家知识产权局专利局 专利审查协作河南中心,河南 郑州 450018;3.天津大学 环境科学与工程学院,天津 300072 |
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| 基金项目： | 国家重点研发计划项目（2018YFC0705300）; 天津市科技计划项目（17YFNZNC00060） |
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| 摘 要： | 采用浸渍法在活性碳纤维（ACF）上负载MnOx制备了MnOx/ACF催化剂,考察了将其用于常温催化氧化二氯甲烷的活性和稳定性。实验结果表明,MnOx负载量（质量分数）为9%的9%MnOx/ACF催化剂活性最高,在反应温度为25 ℃、二氯甲烷质量浓度为600 mg/m3时,反应90 min后9%MnOx/ACF催化剂对二氯甲烷的去除率达71%。9%MnOx/ACF催化剂重复使用5次后对二氯甲烷的去除率仍可达57%,具有较好的重复使用性能。催化剂表面的主要元素为C、O和Mn,且Mn主要以Mn4+形式存在。使用后的催化剂中存在二氯甲烷降解的中间产物甲酸盐和甲氧基物种,说明二氯甲烷已被成功降解。
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| 关 键 词： | 活性碳纤维 二氯甲烷 负载型催化剂 催化氧化 |
| 收稿时间： | 2020-04-30 |
Catalytic oxidation of dichloromethane at ambient temperature with MnOx/ACF supported catalyst |
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| XUE Hua,CUI Jiahao,XING Zhongpeng,ZHAO Dan,DING Hui.Catalytic oxidation of dichloromethane at ambient temperature with MnOx/ACF supported catalyst[J].Environmental Protection of Chemical Industry,2021,41(1):77-82. |
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| Authors: | XUE Hua CUI Jiahao XING Zhongpeng ZHAO Dan DING Hui |
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| Institution: | 1. School of Chemical Engineering,Tianjin University,Tianjin 300072,China;2. Patent Examination Cooperation （Henan）Center of the PatentOffice,CNIPA,Zhengzhou 450018,China;3. School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China |
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| Abstract: | The MnOx/ACF catalyst was prepared by loading MnOx on activated carbon fiber by impregnation method,and the activity and stability for catalytic oxidation of dichloromethane at normal temperature were investigated. The experimental results show that the 9%MnOx/ACF catalyst with a MnOx loading of 9%（w） has the highest activity,and when the reaction temperature is 25 ℃ and the dichloromethane mass concentration is 600 mg/m3,the removal rate of dichloromethane on the 9%MnOx/ACF catalyst is 71% after reaction for 90 min. The removal rate of dichloromethane can still reach 57% after the 9%MnOx/ACF catalyst is reused for 5 times,which shows its good reusable performance. The main elements on the catalyst surface are C,O and Mn,and Mn mainly exists in the form of Mn4+. The used catalyst contains formate and methoxy species which are the intermediate products of dichloromethane degradation,indicating that dichloromethane has been successfully degraded. |
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| Keywords: | activated carbon fiber dichloromethane supported catalyst catalytic oxidation |
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