Metathesis Routes to Nitrides and Nanotubes

该项目的主要目标是通过设计快速的固态方法（交换）反应，使用适当的添加剂（如氯化铵）来控制温度和压力，从而开发获得重要材料的新途径。要合成的系统包括氮化铟及其与氮化镓和氮化铝的固溶体，它们有望在整个可见范围内发光，从红色到紫色甚至更远。此外，还将合成一种加氢脱硫催化剂立方氮化钼，并通过控制反应温度来探索和优化碳纳米管的新路线，并根据热力学数据开发计算机程序来确定最高反应温度。该项目旨在控制复分解反应中的压力和温度，用于合成碳纳米管、封装金属、氮化硅、立方氮化硼和氮化钼等一些难以制备的工业相关材料。这些材料都具有有趣的光学、机械或催化性能。参与这项研究的学生将学习合成和表征技术，他们将有机会与国家实验室和工业科学家合作。这种独特的研究与教育的结合将有助于使这些学生在就业市场上具有很强的竞争力

The main objective of this project is to develop new routes to important materials by designing rapid solid-state methasis (exchanged) reactions that use appropriate additives such as ammonium chloride to control temperature and pressure. Systems to be synthesized include indium nitride and its solid solutions with gallium nitride and aluminum nitride, which are expected to luminesce across the entire visible range form red to violet and beyond. Also, cubic molybdenum nitride, a hydrodesulfurizaiton catalyst, will be synthesized, and new routes of carbon nanotubes will be explored and optimized through the control of reaction temperature where a computer program will be developed to determine maximum reaction temperatures based on thermodynamic data.%%%This project is aimed at the control of pressure and temperature in metathesis reactions for the synthesis of a number of industrially relevant materials such as carbon nanotubes, encapsulated metals, silicon nitride, cubic boron nitride and molybdenum nitride that are difficult to prepare. These materials all have interesting optical, mechanical or catalytic properties. The students involved in this research will learn synthetic and characterization techniques, and they will have an opportunity to collaborate with national laboratory and industrial scientists. This unique integration of research and education will help to make these students highly competitive in the job market