Solid-State Metathesis Reactions Under Pressure

压力下的固态复分解反应

• 批准号: 9704964
• 负责人: Richard Kaner
• 金额: $ 37.99万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-15 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9704964&HistoricalAwards=false
• 关键词: Solid; State; Metathesis; Reactions; Under

1 9704964 Kaner Highly exothermic chemical exchange (metathesis) reactions in the solid-state can be designed to lead rapidly to materials that are otherwise difficult to form. This project will explore the application of pressure to open a new parameter space for the synthesis of high pressure phases which inaccessible under ambient conditions. This approach to solid state metathesis reactions will provide a new synthetic method for forming high quality solid solutions, and for controlling crystallite size, and the important questions explored in this research will have advance considerably the area of chemical processing. %%% The classes of materials to be investigated are of considerable potential technological importance and include crystal size and photoluminescence studies on gallium nitride, and cubic boron nitride, the second hardest materials known after diamond. Methods for forming diamond and substituted carbon materials will also be tested. ***

1 9704964 Kaner固态的高放热化学交换（复分解）反应可以设计成快速形成否则难以形成的材料。 本项目将探索压力的应用，为合成在环境条件下无法实现的高压相开辟一个新的参数空间。 这种固态复分解反应的方法将为形成高质量的固溶体和控制晶粒尺寸提供一种新的合成方法，本研究中探索的重要问题将大大推进化学加工领域。 要研究的材料类别具有相当大的潜在技术重要性，包括对氮化镓和立方氮化硼的晶体尺寸和光致发光研究，这是仅次于金刚石的第二硬材料。 还将测试形成金刚石和替代碳材料的方法。 ***