【摘要】：采用硬模板法合成了介孔氧化錳納米材料,考察了甲醛濃度對(duì)甲醛的催化氧化活性的影響。通過X射線衍射(XRD)、透射電鏡(TEM)、高分辨透射電鏡(HRTEM)等分析手段對(duì)合成的介孔材料進(jìn)行了表征。結(jié)果顯示,所合成的氧化錳具有很好的有序三維介孔結(jié)構(gòu),對(duì)甲醛具有優(yōu)異的催化性能。甲醛的初始濃度對(duì)催化劑的活性有很大的影響,隨著初始濃度的降低,催化劑活性逐漸提高。當(dāng)甲醛的初始濃度為30 mg/L時(shí),氧化錳催化劑在40℃時(shí)即可將甲醛完全降解。對(duì)于非貴金屬型甲醛降解催化劑,此溫度屬于較低的。氧化錳優(yōu)異的催化活性可能與其有序的介孔結(jié)構(gòu)有很大的關(guān)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，

本文編號(hào)：2457268