Molybdate Clustering in Crystallization Solutions

结晶溶液中的钼酸盐团簇

• 批准号: 8912370
• 负责人: Maurice Larson
• 金额: $ 24.2万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8912370&HistoricalAwards=false
• 关键词: Molybdate; Clustering; Crystallization; Solutions

The objective of this research is to characterize the nature of cluster formation in supersaturated molybdate solutions, principally those solutions used to prepare molybdate catalysts. The study is concerned with the effects of concentration, pH and impurities on the degree to which molybdate clusters form and on the size which they achieve. Raman spectroscopy and light scattering techniques will be refined and developed to obtain clustering information. In addition, the analyses of concentration gradients which develop in supersaturated solutions subjected to a force field will also be used to characterize cluster formation. The results of this research will contribute to a better understanding of crystal nucleation and growth from solution as well as contribute to the understanding of the effect of solution conditions on the effectiveness of molybdate catalysts produced from such solutions.

本研究的目的是描述 在过饱和的水溶液中形成团簇， 主要是那些用于制备抗坏血酸的溶液 催化剂的 这项研究关注的是 浓度、pH值和杂质对 它们的形状和大小取决于它们所达到的大小。 拉曼光谱和光散射技术将是 改进和开发以获得聚类信息。 在 此外，浓度梯度的分析， 在力场作用下的过饱和溶液中发展 也将用于表征簇的形成。 这项研究的结果将有助于更好地 从溶液中了解晶体成核和生长 同时也有助于理解 解的有效性条件 由这些溶液制备的催化剂。