Electron Magnetic Resonance Studies of Transition Metal Ions in Microporous Oxide Materials

休斯顿大学的这项研究项目得到了分析和表面化学项目的支持。凯文教授和他的同事使用电子磁共振和电子自旋回波调制光谱来阐明过渡金属离子在微孔和介孔氧化物材料中的结构环境。这些磷酸铝(AlPO)和硅磷酸铝(SAPO)化合物是重要的催化材料，本项目的工作旨在了解它们的结构，因为它与催化功能有关。特别是镍和锰离子，以及新合成的六方相AlPO和SAPO氧化物将在这些研究中得到强调。本工作所研究的材料在石油精炼和烃类过程化学中具有重要的应用。利用电子顺磁共振波谱研究氧化物材料中过渡金属离子的结构是本研究的重点。铝和硅铝磷酸盐载体中加入的镍和锰离子正在被研究。这些催化材料的结构和功能之间的联系是本工作的预期结果，这对炼油催化剂的开发具有重要意义。

This research project at the University of Houston is supported by the Analytical and Surface Chemistry Program. Professor Kevan and his coworkers use electron magnetic resonance and electron spin echo modulation spectrometry to elucidate the structural environment of transition metal ions in microporous and mesoporous oxide materials. These aluminophosphate (AlPO) and silicoaluminophosphate (SAPO) compounds are important catalytic materials, and the work of this project is directed toward understanding their structure as it relates to catalytic function. Nickel and manganese ions in particular will be examined, and newly synthesized hexagonal phase AlPO and SAPO oxides will be emphasized in these studies. The materials investigated in this work have important applications in petroleum refining, and hydrocarbon process chemistry. The use of electron paramagnetic resonance spectroscopy for the structural elucidation of transition metal ions in oxide materials is the focus of this research project. Nickel and manganese ions incorporated into alumino- and silicoaluminophosphate supports are being examined. Connections between structure and function of these catalytic materials are the expected results of this work, which has important implications for the development of petroleum refining catalysts.