| MnO_x-Fe_2O_3催化剂低温催化氧化甲醛性能研究 |
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| 作者单位： | ;1.武汉理工大学华夏学院化学与制药工程系;2.湖北省化学研究院国家CO变换催化剂气体净化剂重点工业性实验基地 |
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| 摘 要： | 利用共沉淀法合成了一种MnO_x-Fe_2O_3催化剂,该催化剂具有低温氧化甲醛的特点,HCHO完全转化温度为80℃.研究了温度、空速、氧含量、入口HCHO含量对催化剂性能的影响.500h寿命试验发现催化剂活性下降.FTIR表征结果表明碳酸盐化是导致催化剂失活的主要原因.
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| 关 键 词： | MnOx-Fe2O3 共沉淀 甲醛 低温氧化 失活 |
Catalytic Performance of MnOx-Fe2 O3 Catalyst for Formaldehyde Oxidation at Low Temperature |
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| Institution: | ,Department of Chemistry and Pharmaceutical,Huaxia College,Wuhan Technology University,Hubei Research Institute of Chemistry,National Key Industrial Base for CO Water Gas Shift Catalyst and Gas Purification Catalyst |
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| Abstract: | MnO_x-Fe_2O_3 mixed oxides prepared by coprecipitation method were investigated for the complete oxidation of formaldehyde.The catalyst showed 100% formaldehyde conversion at a temperature as low as 80℃.The effect of reaction temperature,space velocity,inlet formaldehyde and O_2 content on the catalytic behavior of the MnO_x-Fe_2O_3 mixed oxides were further examined.The life test of the catalyst for 500 hours showed that the catalytic activity of the MnO_x-Fe_2O_3 was unstable.The FTIR analyses suggested that carbonatation was the main reason for catalyst deactivation. |
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| Keywords: | MnOx-Fe2O3 coprecipitation formaldehyde low temperature oxidation deactivation |
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