word
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响条件温和，工艺简单，脱硫效果好等特点，成为近年来有开展潜力的深度脱硫新方法。本文以铁酸镧与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与混晶氧化铁光催化剂。并利用XRD、TEM、FT-IR、UV-Vis DRS等测试技术对其进展了表征。通过光氧化脱硫实验比照，得出混晶氧化铁作为光催化剂进展光氧化脱硫效果最好，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、反响温度、反响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、1.6Et3NHClFeCl3离子液体为萃取剂，考察了离子液体萃取耦合可见光催化
手动胶氧化技术脱除燃料油含硫化合物。在金卤灯的照射下，光催化剂参加量为0.05g，剂油比为1:2.5，空气通入量为500ml/min，反响时间为1h时，50ml硫含量为500ppm的模型油脱硫率可达92.3%。
关键词：离子液体；萃取；光催化氧化；脱硫摩托车化油器结构图
Abstract
Because of serious air pollution, most countries have made laws or regulations to restrict the sulfur content in fuel oil with a more rigorousstandard 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 asphotocatalysts,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 bustion method using ionic liquid and the mixed crystals were synthesized LaFeO3iron oxide photocatalyst. Using XRD, TEM, FT-IR, UV-Vis DRS and other testing techniques to characterize them.By parison photo-oxidation desulfurization, draw m
ixed crystal of iron oxide as a photocatalyst for the best photo-oxidation desulfurization and visible light catalytic oxidation of fuel oil desulfurization mechanism.
Lewis ionic liquids with different structure were synthesized with q uaternary
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 extracti-on solvent, after the effects of the kinds, size a
nd structure of the ionic liquids on the extraction and the desulphuriza tion was investigated.
The experiment of photocatalytic oxidation-ionic liquids extraction was as follows: Model oil was 500ppm sulphur content, photocatalyst was , 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.
Keywords：Ionic liquids; Extraction;Photocatalytic Oxidation; Desulfurization
目录
摘要I
AbstractII
目录IV
第1章绪论1
1.1引言1
1.2加氢催化与非加氢催化脱硫1
1
错误!未定义书签。
1.3离子液体脱硫错误!未定义书签。
脱硫催化剂2
3
boin1.4光催化氧化脱硫3
6
第2章钙钛矿的制备与脱硫研究8
8倒挂器
8
2.1.3钙钛矿光催化剂的制备方法错误!未定义书签。
10
10
2.2.2 结果与讨论11
2.3反相微乳液合成钙钛矿18
2.3.1 实验过程18
2.3.2 结果与讨论19
2.4离子液体自燃烧合成钙钛矿22
2.4.1 实验过程22
2.4.2 结果与讨论22
25
2.6结论26
信号采集
第3章氧化铁的制备与脱硫27
27
27
28
3.3.1 XRD图谱28
3.3.2 UV-Vis DRS图谱30
31
3.4结论32
第4章离子液体萃取耦合光催化氧化脱硫33 33
33
33
4.1.3 脱硫实验37
39
2O3光催化氧化脱硫40
40
4.2.2 结果与讨论40
41
结论43
参考文献44
攻读硕士学位期间所发表论文50
致谢51
豫公网安备41160202000603
站长QQ:729038198
关于我们
投诉建议