Faculty Awards for Women: Catalytic Hydrogenitrogenation of Petroleum Derivatives

该研究计划将重点研究催化剂 在硫化催化剂上的加氢脱氮反应中涉及的现象 和未硫化的Ni-Mo催化剂。 在此过程中使用的催化剂 研究将通过三种不同的技术进行综合，即， 均匀硫化物沉淀，浸渍硫代盐 镍和钼阳离子的分解和嵌入 在粘土基质中。 将进行催化剂表征 使用包括BET表面积和孔径的各种技术 分布分析，X射线衍射，扫描透射 电子显微镜、能量色散X射线分析、激光拉曼 光谱学和拉曼微探针和X射线光电子 谱 还将使用热分析技术 通过程序升温还原、解吸和 硫化研究。 除了环境特性外， 催化剂，原位表征技术也将 采用激光拉曼光谱仪和专门设计的 原位拉曼池。 催化剂中发生的变化 在氧化、还原、硫化、反应和失活过程中 将在现场对这些进程进行审查。 这些研究将用于 研究催化剂的活性形式的性质， 催化剂载体相互作用。 除了检查 反应网络，反应参数的影响， 氢气分压、反应温度和压力， 还将研究取代基的影响。 最后， 同位素标记技术将与动力学研究相结合 和原位激光拉曼光谱研究，以深入了解 加氢脱氮反应中的催化现象。

The research program will focus on investigating the catalytic phenomena involved in hydrodenitrogenation reactions over sulfided and unsulfided Ni-Mo catalysts. The catalysts to be used in this study will be synthesized by three different techniques, namely, homogeneous sulfide precipitation, impregnated thiosalt decomposition and intercalation of nickel and molybdenum cations in clay matrices. Catalyst characterization will be performed using various techniques including BET surface area and pore size distribution analysis, X-ray diffraction, scanning and transmission electron microscopy, energy dispersive X-ray analysis, laser Raman Spectroscopy and Raman microprobe and X-ray photoelectron spectroscopy. Thermal analysis techniques will also be used through temperature-programmed reduction, desorption and sulfidation studies. In addition to ambient characterization of the catalysts, in-situ characterization techniques will also be adopted using a laser Raman spectrometer and a specially designed in-situ Raman cell. The changes that take place in the catalyst during oxidation, reduction, sulfidation, reaction and deactivation processes will be examined in-situ. These studies will be used to investigate the nature of the active form of the catalyst and the catalyst support interactions. In addition to examining the reaction network, the effect of reaction parameters such as hydrogen partial pressure, reaction temperature and pressure and the effect of substituents will also be investigated. Finally, isotopic labelling techniques will be combined with kinetic studies and in-situ laser Raman spectroscopy studies to gain insight into the catalytic phenomena involved in hydrodenitrogenation reactions.