本文選題：核桃殼　切入點(diǎn)：高比表面積活性炭　出處：《分析化學(xué)》2017年09期 　論文類型：期刊論文

【摘要】：以核桃殼為原料,經(jīng)過碳化、KOH活化,制備了高比表面積活性炭,通過三甲基氧基苯基硅烷對活性炭表面進(jìn)行改性,制得苯基鍵合高比表面積活性炭吸附材料。通過氮?dú)馕椒y定了苯基鍵合活性炭的比表面積及孔徑分布;采用紅外光譜、X射線光電子能譜、X射線粉末衍射技術(shù)對苯基鍵合活性炭的有機(jī)官能團(tuán)、表面元素的化學(xué)環(huán)境及晶體結(jié)構(gòu)進(jìn)行了表征。將該吸附材料制成采樣管,吸附空氣中的揮發(fā)性有機(jī)物,二硫化碳解吸后使用氣相色譜進(jìn)行分析�？疾炝吮交I合活性炭對乙醇、丙酮、正己烷、乙酸乙酯、四氫呋喃、1,2-二氯乙烷和苯共7種揮發(fā)性有機(jī)化合物(VOCs)的吸附性能,飽和吸附量在129~216 mg/g之間;在0.05~2.50 mg/m L范圍內(nèi),7種組分的峰高與濃度呈良好的線性關(guān)系,檢出限在0.92~3.60 mg/m~3之間。
[Abstract]:Activated carbon with high specific surface area was prepared from walnut shell and activated by carbonation of Koh. The surface of activated carbon was modified by trimethyloxyphenyl silane. The active carbon adsorption material with high specific surface area of phenyl bonding was prepared. The specific surface area and pore size distribution of phenyl bonded activated carbon were determined by nitrogen adsorption method. The organic functional groups, the chemical environment of surface elements and the crystal structure of phenyl bonded activated carbon were characterized by X-ray photoelectron spectroscopy (XPS) X-ray powder diffraction technique. The adsorption of volatile organic compounds in air was analyzed by gas chromatography after desorption of carbon disulfide. The effects of phenyl-bonded activated carbon on ethanol, acetone, n-hexane and ethyl acetate were investigated. The adsorbability of seven volatile organic compounds (VOC) from THF to benzene is in the range of 129 ~ 216 mg/g, and the peak height and concentration of the seven components are linear in the range of 0.05 ~ 2.50 mg/m / L, and the detection limit is 0.923.60 mg/m~3.
【作者單位】： 齊齊哈爾大學(xué)分析測試中心;
【基金】：黑龍江省自然科學(xué)基金項(xiàng)目(No.B201101)資助
【分類號】：O647.3;X701

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本文編號：1591338