本文選題：金屬改性 + 有序雜化介孔碳��； 參考：《上海應(yīng)用技術(shù)學(xué)院》2015年碩士論文

【摘要】：燃油中硫化物在燃燒過程中會(huì)轉(zhuǎn)化為SOx,除了形成酸雨,還會(huì)導(dǎo)致尾氣轉(zhuǎn)化催化劑中毒。另外,作為清潔能源的質(zhì)子交換膜燃料電池和固態(tài)氧化物燃料電池也需要低硫含量(分別小于lppm和10ppm)的液體燃料作為原料。因此,燃油的超深度脫硫已經(jīng)成為一項(xiàng)重要研究課題。本文制備了銅改性的有序雜化介孔碳材料,考察了銅負(fù)載方式、基體組成及孔結(jié)構(gòu)、基體表面酸性等對(duì)模擬燃油中二苯并噻吩(DBT)常溫常壓吸附性能的影響。1.采用等體積浸漬法制備了銅改性的有序介孔碳硅復(fù)合材料(MCS),與銅改性的純硅(SBA-15)和純碳(CMK-3)相比,其對(duì)含苯的模擬燃油中DBT的吸附具有高的選擇性。這主要是由于金屬銅在MCS表面較高的分散性以及銅與炭組分對(duì)DBT的協(xié)同作用,而銅的高分散得益于硅和碳組分相互貫穿所形成的雜化孔表面。2.采用等體積浸漬法制備了銅改性的有序介孔碳硅鋁材料(MCSA)和有序介孔碳鋁材料(MCA),基體表面B酸量越多,銅的分散程度越高,相比于純基體DBT吸附量提高的程度越大。另外,純基體材料對(duì)DBT的吸附容量與表面酸量成正比,而與微孔孔容相關(guān)性不大。3.采用原位載銅法制備了銅改性的MCS材料,其硫容量相比純基體提高了49%(高于后負(fù)載法),可能是由于銅顆粒呈半裸露狀嵌在孔壁上使其分散程度提高所致。
[Abstract]:The sulfides in fuel oil can be converted into so _ x during combustion, which, in addition to forming acid rain, can lead to poisoning of tail gas conversion catalyst. In addition, proton exchange membrane fuel cells (PEMFC) and solid oxide fuel cells (SOFC), which are clean energy sources, also need liquid fuel with low sulfur content (less than lppm and 10 ppm respectively) as feedstock. Therefore, ultra-deep desulfurization of fuel has become an important research topic. In this paper, the ordered hybrid mesoporous carbon materials modified by copper were prepared. The effects of copper loading mode, matrix composition and pore structure, surface acidity of matrix on the adsorption properties of dibenzothiophene dithiophene (DBT) in simulated fuel at room temperature and atmospheric pressure were investigated. Copper modified ordered mesoporous carbon silicon composites (MCSs) were prepared by equal volume impregnation method. Compared with copper modified pure silicon SBA-15 and pure carbon CMK-3, the adsorption of DBT in benzene-containing simulated fuel oil has high selectivity. This is mainly due to the high dispersion of copper on the surface of MCS and the synergistic effect of copper and carbon on DBT, while the high dispersion of copper is due to the interpenetration of silicon and carbon on the surface of hybrid pore. The copper-modified ordered mesoporous carbon silica-aluminum (DBT) and ordered mesoporous carbon aluminum (MCA) were prepared by the same volume impregnation method. The higher the amount of B acid on the surface of the matrix, the higher the dispersion degree of copper, and the greater the adsorption capacity of copper was compared with that of pure matrix. In addition, the adsorption capacity of DBT on pure matrix material is directly proportional to the amount of acid on the surface, but has little correlation with the micropore volume. Copper modified MCS materials were prepared by in-situ copper loading method. The sulfur capacity of copper modified MCS was increased by 49% compared with pure matrix (higher than that by post-loading method), which may be due to the increase of dispersion degree of copper particles embedded in the pore wall in semi-bare form.
【學(xué)位授予單位】：上海應(yīng)用技術(shù)學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ127.11;TB383.4

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本文編號(hào)：1947001