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1、w摘 要 为了有效控制环境污染，世界各国对燃料油中的硫含量不断提出更严格的要求。光催化氧化-离子液体萃取耦合脱硫具有反应条件温和，工艺简单，脱硫效果好等特点，成为近年来有发展潜力的深度脱硫新方法。本文以铁酸镧及氧化铁作为光催化剂，分别考察了在不同离子液体萃取体系下通过光催化氧化燃料油脱硫情况。分别用溶胶凝胶法、反相微乳液法合成了 Ca2+和 Nd3+离子掺杂的 LaFeO3纳米粉体，首次用离子液体自燃烧法合成了 LaFeO3及混晶氧化铁光催化剂。并利用XRD、TEM、FT-IR、UV-Vis DRS 等测试技术对其进行了表征。通过光氧化脱硫实验对比，得出混晶氧化铁作为光催化剂进行光氧化脱硫效果
2、最好，并探讨了其可见光催化氧化燃料油脱硫机理。以季铵盐为阳离子、金属基氯化物如 ZnCl2、FeCl3等为阴离子，合成不同结构的 Lewis 酸性季铵盐类离子液体，考察了离子液体的种类、阴阳离子比例、反应温度、反应时间等因素对萃取脱硫的影响，优选出盐酸三乙胺与氯化铁形成的离子液体作为萃取剂。以混晶氧化铁为光催化剂、1.6Et3NHCl FeCl3离子液体为萃取剂，考察了离子液体萃取耦合可见光催化氧化技术脱除燃料油含硫化合物。在金卤灯的照射下，光催化剂加入量为 0.05g，剂油比为 1:2.5，空气通入量为 500ml/min，反应时间为 1h时，50ml 硫含量为 500ppm 的模型油脱硫率
3、可达 92.3%。关键词：离子液体；萃取；光催化氧化；脱硫wAbstractBecause 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) extra
4、ction 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
5、 iron oxide as photo catalysts,thiophene /dibenzothiophene (DBT) in n-octane as model oil.Sol-gel method and reverse microemulsion method were used to synthesized Ca2 + and Nd3 + doped nanopowders LaFeO3, the first time since the combustion method using ionic liquid and the mixed crystals were synth
6、esized LaFeO3 iron oxide photocatalyst. Using XRD, TEM, FT-IR, UV-Vis DRS and other testing techniques to characterize them.By comparison photo-oxidation desulfurization, draw mixed crystal of iron oxide as a photocatalyst for the best photo-oxidation desulfurization and visible light catalytic oxid
7、ation 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 composed of triethylamine hydrochloride and ferric chloride wasselec
8、ted as extracti-on 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 oxidation-ionic liquids extraction was as follows: Model oil was 500ppm sulphur content, photocatalyst was
9、0.05g, the ratio of catalyst and oil was 1:2.5, the entrance amount of the air was 500ml/min, under the irridation of Metal Halide Lamp. Desulfurization rate could reach to 92.3% within 60 min reaction time.Key words：Ionic liquids; Extraction; Photocatalytic Oxidation; Desulfurizationw目 录摘 要IAbstractII目 录III第 1 章 绪 论11.1 引言11.2 加氢催化与非加氢催化脱硫11.2.1 加氢催化11.2.2 非加氢催化错误！未定义书签。错误！未定义书签。1.3 离子液体脱硫错误！未定义书签。错误！未定义书签。1.3.1 有机溶剂萃取脱硫21.3.2 离子液体萃取脱硫31.4 光催化氧化脱硫41.5 本课题来源及主要研究内容 6第 2 章 钙钛矿的制备及脱硫研究82.1 引言 82.1.1 钙钛矿结构82.1.3 钙钛矿光催化剂的制备方法错误！未定义书签。错误！未定义书签。2.2 溶胶凝胶法合成钙钛矿 102.2.1 实验部分102.2.2 结果与讨论
