Analytical Chemistry of Alumina-Supported Catalyst Surfaces

氧化铝负载的催化剂表面的分析化学

• 批准号: 9022135
• 负责人: David Hercules
• 金额: $ 57.5万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-15 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022135&HistoricalAwards=false
• 关键词: Analytical; Chemistry; Alumina; Supported; Catalyst

This research, supported by the Analytical and Surface Chemistry Program in the Chemistry Division, will study the fundamental chemistry of alumina-supported catalysts. Such catalysts are commonly used in the petroleum and petrochemical industries, but are not well understood. By studying the details of the surface chemistry of the catalysts, understanding leading to optimization of catalytic efficiency and specificity will be obtained. In turn, optimization of industrial processing with such catalysts may be anticipated. %%% This research, supported by the Analytical and Surface Chemistry Program in the Chemistry Division, will employ Electron Spectroscopy for Chemical Analysis (ESCA) to characterize the surface oxidation state of alumina-supported chromium catalysts, and then correlate oxidation state with reactivity. Means of easily depositing well-defined thin layers of known oxidation state will also be pursued. By correlating catalytic activity with surface structure and oxidation state, control of catalytic activity will be sought. Raman spectroscopy and X-ray Absorption Fine Structure measurements will also be employed.

这项研究得到了分析和表面的支持， 化学系的化学课程，将研究 氧化铝负载催化剂的基础化学。 等 催化剂通常用于石油和石化 行业，但不太了解。 通过研究 催化剂表面化学的详细信息， 理解导致催化效率的优化 并获得特异性。 反过来，优化 可以预期使用这种催化剂的工业加工。 %%% 这项研究得到了分析和表面的支持， 化学系的化学课程，将雇用 化学分析电子能谱（ESCA） 表征氧化铝负载的表面氧化态 铬催化剂，然后将氧化态与 反应性 容易沉积界限分明的薄 也将采用已知氧化态的层。 通过 将催化活性与表面结构相关联， 氧化态，将寻求催化活性的控制。 拉曼光谱与X射线吸收精细结构 还将进行测量。