Supported Sulfide Cluster Catalysts for Hydrodesulfurization

小型企业创新研究（SBIR）第一阶段 项目是在分析和表面的一般领域 化学和多相催化领域。 这项活动的重点是基本的 金属硫化物簇合物-氧化物载体研究 加氢脱硫系统（HDS）。 加氢脱硫仍然是一个知之甚少的反应 尽管有大量的研究。 使用群集派生的 加氢脱硫催化剂代表了一种新的方法， 确定HDS的活性位点并了解其 物理化学性质 这种催化剂还可以 具有相对于 常规制备的HDS催化剂。 在执行本项目的研究计划时，Dr。 汤普森将调查这名流浪汉的行为 硫化物簇合物Cp 2 Mo 2（uS）2（uSH）2、Fe 2（uS）2（CO）6和 Co6（u3S）2（CO）12。 因为这些簇包含桥接 硫化物配体，它们的金属框架预计是 在HDS反应条件下非常耐用和稳定。 这些集群将被综合并支持在 部分脱羟基的γ-Al 2 O 3和MgO。 纯洁 负载型催化剂的特征在于各种 分析技术包括红外光谱， 表面积分析、X射线衍射和X射线衍射 光电子能谱学 机械的见解， 从这些研究中获得的HDS反应将用作 这个重要的催化过程的模型的基础。

This Small Business Innovation Research (SBIR) Phase I project is in the general area of analytical and surface chemistry and in the subfield of heterogeneous catalysis. The thrust of this activity focusses on fundamental investigations of metal sulfide cluster-oxide support systems for hydrodesulfurization (HDS). Hydrodesulfurization remains a poorly understood reaction despite very extensive study. The use of cluster-derived catalysts for HDS represents a novel approach to identifying the active site for HDS and understanding its physicochemical nature. This type of catalyst could also have improved activity and selectivity relative to conventionally prepared HDS catalysts. In the execution of the research plan of this project, Dr. Thompson will investigate the behavior of the homonuclear sulfide clusters Cp2Mo2(uS)2(uSH)2, Fe2(uS)2(CO)6,and Co6(u3S)2(CO)12. Because these clusters contain bridging sulfide ligands, their metal frameworks are expected to be very robust and stable under HDS reaction conditions. These clusters will be synthesized and supported on partially dehydroxylated gamma-Al2O3 and MgO. The pure and supported catalysts will be characterized by a variety of analytical techniques including infrared spectroscopy, surface area analysis, X-ray diffraction, and X-ray photoelectron spectroscopy. Mechanistic insights into the HDS reaction garnered from these studies will be used as the basis for a model of this important catalytic process.