埃洛石纳米管表面结构对其吸附脱硫性能的影响

发布时间：2018-01-24 09:01

本文关键词： 埃洛石纳米管煅烧酸处理表面结构吸附脱硫　出处：《化学工业与工程》2016年05期 　论文类型：期刊论文

【摘要】：埃洛石纳米管是有广泛应用前景的新型纳米管材料,利用煅烧和酸处理等方法对埃洛石纳米管进行改性,研究改性后埃洛石纳米管表面结构对其吸附脱硫性能的影响,并利用X射线衍射(XRD)、红外光谱(FTIR)和扫描电子显微镜(SEM)等手段进行表征和分析。研究发现,埃洛石纳米管热稳定性较高,高温煅烧后仍然保持其管状结构,随着煅烧温度的增加其羟基含量减少,脱硫性能改变。酸处理在一定程度上增加了煅烧后埃洛石纳米管的羟基含量,酸处理后样品的脱硫效果随羟基含量的增加而增加。因此表明埃洛石纳米管羟基含量是影响其脱硫效果的重要因素。
[Abstract]:Ellizzi nanotubes are new nanotube materials with wide application prospect. They are modified by calcination and acid treatment. The influence of the surface structure of the modified Ellis nanotubes on their adsorption and desulfurization performance was studied, and X-ray diffraction (XRD) was used. Infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to characterize and analyze the results. It was found that the thermal stability of Elosterite nanotubes was high and the tubular structure remained after high temperature calcination. With the increase of calcination temperature, the content of hydroxyl group decreased and the desulfurization performance changed. Acid treatment increased the content of hydroxyl group in the calcined Elaurite nanotubes to a certain extent. The desulphurization effect of the samples increased with the increase of hydroxyl content after acid treatment, which indicated that the hydroxyl content of Elosite nanotubes was an important factor affecting the desulfurization effect.
【作者单位】：天津大学化工学院天津市应用催化科学与工程重点实验室;
【分类号】：TB383.1
【正文快照】： 纳米管是当前研究的热点材料,在能源、环保、医药及生物工程等诸多领域表现出优良的性能[1-3]。但目前研究较多的碳纳米管存在价格昂贵,改性难度大、具有可燃性等缺点[4],影响其在各个领域的应用。埃洛石纳米管(halloysite nano-tubes,缩写HNTs)是一种价格低廉的天然纳米管,因

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