杂多化合物-离子液体双催化剂的柴油深度氧化脱硫协同作用的研究

Deep desulfurization of diesel is an urgent research topic in the world. Oxidative desulfurization is considered as one of the most promising processes. For reducing desulfurization cost, the usage of the green and low cost oxygen as oxidant is attracting intensive attention. The catalysts are the key factor for the enviromental and low-cost desulfurization process. This project proposes a deep oxidative desulfurization system of diesel under mild conditions using molecular oxygen as oxidant.In this system, oxygen is activated via the Anderson-type heteropoly compounds and the organic sulfur compounds is activated via ionic liquids. The desulfurization process is tracked by mordern spectroscopic characterization methods. The structure influence of Anderson-type heteropoly compounds on the activation of oxygen molecules is studied. The influence of ionic liquids structure and the br?nsted acid properties on the activation of organic sulfides is also investigated in this project. Synergistic effect of heteropoly compounds and ionic liquids on deep desulfurization of diesel will be explored. Through the implementation of this project, the nature of heteropoly compounds-ionic liquids dual catalysts in the catalytic oxidation desulfurization of diesel will also be investigated. It has scientific significance for the develpoment of desulfurization technolygy of diesel.

柴油的深度脱硫是世界范围内急需解决的一个重要研究课题。氧化脱硫是实现柴油深度脱硫最有前景的工艺之一。为了降低脱硫成本，以绿色、廉价的氧气（空气）作为氧化剂进行柴油的深度氧化脱硫，是学术界非常关心的问题。催化剂是实现环保、低成本脱硫工艺的关键。本项目提出以氧气为氧化剂，利用Anderson型杂多化合物催化活化氧气、离子液体催化活化柴油中的有机硫化物，实现温和条件下柴油的深度氧化脱硫。运用现代波谱技术等表征手段对脱硫过程中有机硫化物的变化进行系统分析。研究Anderson型杂多化合物的结构与氧气分子活化的关系；离子液体结构、B酸性质与有机硫化物的活化之间的关系；考察杂多化合物-离子液体在催化氧化柴油深度脱硫中的协同催化作用。通过本项目的实施，对于深入理解杂多化合物-离子液体在柴油深度脱硫中的本质，推动柴油深度脱硫工艺的发展具有科学的指导意义。

柴油的深度脱硫是世界范围内急需解决的一个重要研究课题。氧化脱硫是实现柴油深度脱硫最有前景的工艺之一。本课题开发了多种类型的离子液体体系以及Anderson型杂多化合物催化剂，对柴油进行萃取耦合催化氧化深度脱硫的研究，取得了较好的进展。运用现代波谱技术等表征手段对脱硫过程中有机硫化物的变化进行系统分析。考察了Anderson型杂多化合物的结构，离子液体的酸性，组成以结构等因素对体系氧化脱硫性质的影响。研究发现，新型离子液体：低共熔剂，同样具有很好的萃取耦合催化氧化深度脱硫能力。另外，我们还将合成的低共熔剂用于二氧化碳的环加成反应，同样取得了较好的效果。