介孔氧化锰对甲醛的低温催化氧化

发布时间：2019-04-12 18:28

【摘要】：采用硬模板法合成了介孔氧化锰纳米材料,考察了甲醛浓度对甲醛的催化氧化活性的影响。通过X射线衍射(XRD)、透射电镜(TEM)、高分辨透射电镜(HRTEM)等分析手段对合成的介孔材料进行了表征。结果显示,所合成的氧化锰具有很好的有序三维介孔结构,对甲醛具有优异的催化性能。甲醛的初始浓度对催化剂的活性有很大的影响,随着初始浓度的降低,催化剂活性逐渐提高。当甲醛的初始浓度为30 mg/L时,氧化锰催化剂在40℃时即可将甲醛完全降解。对于非贵金属型甲醛降解催化剂,此温度属于较低的。氧化锰优异的催化活性可能与其有序的介孔结构有很大的关系。
[Abstract]:The mesoporous manganese oxide nanomaterials were synthesized by hard template method. The effect of formaldehyde concentration on the catalytic oxidation activity of formaldehyde was investigated. The synthesized mesoporous materials were characterized by X-ray diffraction (XRD),) transmission electron microscopy (TEM),) high resolution transmission electron microscopy (HRTEM) and so on. The results show that the synthesized manganese oxide has a good three-dimensional ordered mesoporous structure and excellent catalytic performance for formaldehyde. The initial concentration of formaldehyde has a great effect on the activity of the catalyst, and with the decrease of the initial concentration, the activity of the catalyst increases gradually. When the initial concentration of formaldehyde is 30 mg/L, the manganese oxide catalyst can completely degrade formaldehyde at 40 鈩，

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