High Temperature Solid-Solid Reaction Kinetics Via Dynamic X-Ray Diffraction

通过动态 X 射线衍射研究高温固-固反应动力学

• 批准号: 8719929
• 负责人: William Thomson
• 金额: --
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-04-01 至 1991-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8719929&HistoricalAwards=false
• 关键词: Temperature; Solid; Reaction; Kinetics; Via

Two reacting solid-state systems are investigated using dynamicx-ray diffraction (DXRD) and other techniques. The systems to be studied are (1) the reaction of calcium oxide and silica to form calcium silicates, and (2) the synthesis of mullite from colloidal boehmite and silica. The objectives of the study are (1) to obtain quantitative verification of DXRD-acquired data in a system of known kinetic behavior (calcium silicate), (2) to apply DXRD to a multiply reacting system (mullite), (3) to determine the effects of particle size and water vapor on the roles of diffusion and kinetics in solid-solid reactions, and (4) to determine the reaction sequence and rate-limiting steps in the production of sol-gel-derived mullite. This project includes the first application of DXRD to a system with unknown kinetics. This new technique, developed by the investigator, has the potential to provide more detailed information on solid-solid reacting systems than has been possible up to now.

使用DynamicX-Ray衍射（DXRD）和其他技术研究了两个反应固态系统。要研究的系统是（1）氧化钙和二氧化硅对形成硅酸钙的反应，以及（2）从胶体铜矿和二氧化硅中合成mullite。 The objectives of the study are (1) to obtain quantitative verification of DXRD-acquired data in a system of known kinetic behavior (calcium silicate), (2) to apply DXRD to a multiply reacting system (mullite), (3) to determine the effects of particle size and water vapor on the roles of diffusion and kinetics in solid-solid reactions, and (4) to determine the reaction sequence and rate-limiting steps in Sol-Gel衍生的Mullite的产生。该项目包括DXRD在具有未知动力学的系统中的首次应用。研究人员开发的这项新技术有可能提供有关固体反应系统的更多详细信息，而不是现在。