Research Initiation: Nucleation and Growth of Metal Oxide Clusters in a Free Jet

研究启动：自由射流中金属氧化物簇的成核和生长

• 批准号: 8809321
• 负责人: H. Henry Lamb
• 金额: $ 6.98万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8809321&HistoricalAwards=false
• 关键词: Research; Initiation; Nucleation; Growth; Metal

This is an experimental study of the nucleation and growth of nanometer sized metal oxide particles from the rapid expansion of supercritical aqueous solutions through a nozzle. Initially silicon dioxide solutions will be studied followed by zirconium and yttrium oxide solutions. Transmission Fourier Transform spectroscopy will be used to characterized the molecular precursors to the particles and particle size will be determined by Rayleigh scattering along the beam axis. The research should yield important scientific information on nucleation and particle growth under markedly different conditions than studied heretofore. It offers a novel process for producing fine particles of controlled size and composition for possible synthesis of ceramics, superconductors, or catalysts.

这是一个实验研究的成核和生长的 纳米尺寸的金属氧化物颗粒的快速膨胀， 超临界水溶液通过喷嘴。 最初的硅 将研究二氧化物溶液，然后研究锆和钇 氧化物溶液。 透射傅里叶变换光谱将是 用于表征颗粒的分子前体， 颗粒尺寸将通过沿光束沿着的瑞利散射来确定 轴线 这项研究应该产生重要的科学信息， 在明显不同的条件下的成核和颗粒生长 比以前研究的要多。 它提供了一种新的方法， 控制颗粒的尺寸和组成， 陶瓷、超导体或催化剂。