Modulation of Surface Reactivity of Large Polyoxometalate Anions

大多金属氧酸盐阴离子表面反应性的调节

• 批准号: 9215228
• 负责人: Michael Pope
• 金额: $ 27.15万
• 依托单位: Georgetown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9215228&HistoricalAwards=false
• 关键词: Modulation; Surface; Reactivity; Large; Polyoxometalate

In this project of the Inorganic, Bioinorganic, and Organometalic Chemistry Program, Michael T. Pope of Georgetown University will investigate the chemistry of polyoxometalate species. This research is directed towards developing and controlling the reactivity of metal oxygen cluster anions in polar and nonpolar solvents. Such polyanions are viewed as models of metal oxides and offer possibilities for deeper understanding of the heterogeneous catalytic activity of oxides. Surfaces of large polyoxotungstate(VI) and molybdate(VI) anions containing 12 - 40 metal atoms will be activated by the introduction of lower-valent metal cations and by reduction in certain cases to yield metal-metal bonded cluster domains. These species will be investigated with regard to their atom- and electron-transfer reactivities. %%% Potentially catalytic compounds containing metal ions and oxygen atoms will be developed. These compounds are of interest because they are wholly inorganic, and thus should be quite robust under catalytic conditions. Moreover, because of their large size and variable composition, these compounds provide a wealth of fascinating information about how metal ions "communicate" in close proximity.

在这个无机，生物无机， 有机化学程序，迈克尔T。乔治城教宗 大学将研究聚氧乙烯酸盐的化学性质 物种 这项研究旨在开发和 控制金属氧簇阴离子的反应性， 极性和非极性溶剂。 这种聚阴离子被视为 金属氧化物的模型，并提供更深层次的可能性， 了解非均相催化活性 氧化物 大的多钨酸盐（VI）和 含有12 - 40个金属原子的阴离子将是 通过引入低价金属阳离子而活化， 在某些情况下通过还原产生金属-金属结合的 群集域。 这些物种将被调查， 原子和电子转移反应性。 %%% 含有金属离子的潜在催化化合物， 氧原子将被开发出来。 这些化合物是 感兴趣，因为它们完全是无机的，因此应该是 在催化条件下非常稳定。 而且由于 这些化合物体积大，成分多变， 提供了大量关于金属 离子在很近的地方“交流”。