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光催化氧化-離子液體萃取耦合脫硫畢業(yè)論文-展示頁

2025-07-06 23:31本頁面
  

【正文】 ??????????????????????????????????????????????????????????III第 1 章 緒 論 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????1 引言 ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1 加氫催化與非加氫催化脫硫 ?????????????????????????????????????????????????????????????????????????????????????1 加氫催化 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????1 非加氫催化 ?????????????????????????????????????????????????????????????????????????錯(cuò)誤!未定義書簽。 Extraction。在金鹵燈的照射下,光催化劑加入量為 ,劑油比為 1:,空氣通入量為 500ml/min,反應(yīng)時(shí)間為 1h時(shí),50ml 硫含量為 500ppm 的模型油脫硫率可達(dá) %。以季銨鹽為陽離子、金屬基氯化物如 ZnClFeCl 3 等為陰離子,合成不同結(jié)構(gòu)的 Lewis 酸性季銨鹽類離子液體,考察了離子液體的種類、陰陽離子比例、反應(yīng)溫度、反應(yīng)時(shí)間等因素對萃取脫硫的影響,優(yōu)選出鹽酸三乙胺與氯化鐵形成的離子液體作為萃取劑。并利用XRD、 TEM、FTIR、UVVis DRS 等測試技術(shù)對其進(jìn)行了表征。本文以鐵酸鑭及氧化鐵作為光催化劑,分別考察了在不同離子液體萃取體系下通過光催化氧化燃料油脫硫情況。摘 要為了有效控制環(huán)境污染,世界各國對燃料油中的硫含量不斷提出更嚴(yán)格的要求。光催化氧化離子液體萃取耦合脫硫具有反應(yīng)條件溫和,工藝簡單,脫硫效果好等特點(diǎn),成為近年來有發(fā)展?jié)摿Φ纳疃让摿蛐路椒ā7謩e用溶膠凝膠法、反相微乳液法合成了 Ca2+和 Nd3+離子摻雜的 LaFeO3 納米粉體,首次用離子液體自燃燒法合成了 LaFeO3 及混晶氧化鐵光催化劑。通過光氧化脫硫?qū)嶒?yàn)對比,得出混晶氧化鐵作為光催化劑進(jìn)行光氧化脫硫效果最好,并探討了其可見光催化氧化燃料油脫硫機(jī)理。以混晶氧化鐵為光催化劑、 3NHCl FeCl3 離子液體為萃取劑,考察了離子液體萃取耦合可見光催化氧化技術(shù)脫除燃料油含硫化合物。關(guān)鍵詞:離子液體;萃取;光催化氧化;脫硫AbstractBecause of serious air pollution, most countries have made laws or regulations to restrict the sulfur content in fuel oil with a more rigorous standard in rencent years. Among desulfurization techniques, photocatalytic oxidation coulped ionic liquids (ILs) extraction desulfurization technology, which has many advantages such as mild conditions, simple techniques, high desulfurization efficiency, shows promising as an approach for deep desulfurization. Applications of different ILs in photocatalysis oxidation desulfurization were investigated with LaFeO3 or iron oxide as photo catalysts,thiophene /dibenzothiophene (DBT) in noctane as model oil.Solgel method and reverse microemulsion method were used to synthesized Ca2 + and Nd3 + doped nanopowders LaFeO3, the first time since the bustion method using ionic liquid and the mixed crystals were synthesized LaFeO3 iron oxide photocatalyst. Using XRD, TEM, FTIR, UVVis DRS and other testing techniques to characterize parison photooxidation desulfurization, draw mixed crystal of iron oxide as a photocatalyst for the best photooxidation desulfurization and visible light catalytic oxidation of fuel oil desulfurization mechanism.Lewis ionic liquids with different structure were synthesized with quaternary ammonium salts as positive ions and metal chlorides, such as ZnCl2,FeCl3, as negative ions. The ionic liquids posed of triethylamine hydrochloride and ferric chloride was selected as extraction solvent, after the effects of the kinds, size and structure of the ionic liquids on the extraction and the desulphurization was investigated.The experiment of photocatalytic oxidationionic liquids extraction was as follows: Model oil was 500ppm sulphur content, photocatalyst was , the ratio of catalyst and oil was 1:, the entrance amount of the air was 500ml/min, under the irridation of Metal Halide Lamp. Desulfurization rate could reach to % within 60 min reaction time.Key words: Ionic liquids。 Photocatalytic Oxidation。 離子液體脫硫 ???????????????????????????????????????????????????????????????????????????錯(cuò)誤!未定義書簽。 溶膠凝膠法合成鈣鈦礦 ???????????????????????????????????????????????????????????????????????????????????????????10 實(shí)驗(yàn)部分 ?????????????????????????????????????????????????????????????????????????????????????????????????????????????10 結(jié)果與討論 ????????????????????????????????????????????????????????????????????????????????????????????????????????11 反相微乳液合成鈣鈦礦 ???????????????????????????????????????????????????????????????????????????????????????????18 實(shí)驗(yàn)過程 ????????????????????????????????????????????????????????????????????????????????????????????????????????????18 結(jié)果與討論 ????????????????????????????????????????????????????????????????????????????????????????????????????????18 離子液體自燃燒合成鈣鈦礦 ???????????????????????????????????????????????????????????????????????????????????22 實(shí)驗(yàn)過程 ????????????????????????????????????????????????????????????????????????????????????????????????????????????22 結(jié)果與討論 ????????????????????????????????????????????????????????????????????????????????????????????????????????23 光氧化脫硫 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????26 結(jié)論 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????26第 3 章 氧化鐵的制備與脫硫 ?????????????????????????????????????????????????????????????????????????????????????????28 引言 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????28 實(shí)驗(yàn)過程 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????28 結(jié)果與討論 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????29 XRD 圖譜 ???????????????????????????????????????????????????????????????????????????????????????????????????????????29 UVVis DRS 圖譜 ??????????????????????????????????????????????????????????????????????????????????????????????32 光氧化脫硫 ?????????????????????????????????????????????????????????????????????????????????????????????????????????32 結(jié)論 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????33第 4 章 離子液體萃取耦合光催化氧化脫硫 ?????????????????????????????????????????????????????????????????34 離子液體萃取脫硫 ???????????????????????????????????????????????????????????????????????????????????????????????????34 季銨鹽離子液體的合成 ?????????????????????????????????????????????????????????????????????????????????????34
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