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  本文關鍵詞：載鎳和鎳鋅炭氣凝膠的制備及其脫硫性能的研究　出處：《上海應用技術學院》2015年碩士論文　論文類型：學位論文

  更多相關文章： 炭氣凝膠 脫硫 燃油 金屬鎳負載 Ni/ZnO體系負載

【摘要】：燃油中的噻吩類有機硫燃燒可造成嚴重的空氣污染,并易使車輛尾氣處理催化劑失活,燃油深度脫硫是燃油凈化提質的熱點研究方向。本文采用Ni原位負載法和后負載法制備了載鎳炭氣凝膠以及載Ni/ZnO雙金屬炭氣凝膠,并研究了所制備材料的孔結構和活性組分的微觀結構及常溫靜態(tài)／動態(tài)脫硫和高溫臨氫脫硫性能。結果表明：所制備的負載金屬炭氣凝膠凝膠為中孔結構；原位負載鎳的炭氣凝膠靜態(tài)脫硫效果較差,后負載Ni/ZnO炭氣凝膠靜態(tài)脫硫隨著負載金屬濃度提升而下降。動態(tài)脫硫表明后負載鎳的炭氣凝膠在脫硫時主要以微孔吸附脫硫為主,后負載Ni/ZnO雙金屬炭氣凝膠中金屬組分有堵孔現(xiàn)象而導致吸附容量下降。Ni/ZnO雙金屬炭氣凝膠高溫臨氫脫硫效果突出,出口硫濃度小于10ppm時,隨著雙金屬負載量的增加,硫吸附容量從18.1增加到25.3mgS/g-吸附劑,但金屬的利用率從40降為19.66%,總吸附容量超過理論值的兩倍,表明存在催化加氫脫硫的貢獻。該材料體系的高溫臨氫化學吸附脫硫性能與目前工業(yè)所用的S-zorb技術十分相近。
[Abstract]:The combustion of thiophene organic sulfur in fuel oil can cause serious air pollution and deactivate the catalyst for vehicle exhaust treatment. Deep desulfurization of fuel oil is a hot research direction in fuel purification and upgrading. In this paper, nickel loaded carbon aerogels and Ni/ZnO loaded bimetallic carbon aerogels were prepared by Ni in situ loading method and after loading method. The pore structure and the microstructures of active components and the properties of static / dynamic desulfurization at room temperature and hydrodesulfurization at elevated temperature were studied. The results showed that the supported metal carbon aerogels were mesoporous. The static desulfurization effect of carbon aerogels loaded with nickel in situ is poor. The static desulfurization of post-loaded Ni/ZnO carbon aerogels decreased with the increase of metal concentration. Dynamic desulphurization showed that the carbon aerogels loaded with nickel were mainly microporous desulfurized. The adsorption capacity of Ni/ZnO bimetallic carbon aerogels was decreased due to the plugging of metal components. The hydrogen desulfurization effect of Ni / ZnO bimetallic carbon aerogels at high temperature was outstanding. When the export sulfur concentration is less than 10 ppm, the adsorption capacity of sulfur increases from 18.1 to 25.3 mg S / g-adsorbent with the increase of bimetallic loading. However, the utilization ratio of metals decreased from 40 to 19.66 and the total adsorption capacity was more than twice the theoretical value. It is shown that there is a contribution of catalytic hydrodesulfurization, and the catalytic hydrodesulfurization performance of the system is very close to that of S-zorb technology used in industry.
【學位授予單位】：上海應用技術學院
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TQ427.26;TE624.55

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