MRI: Acquisition of an X-ray Absorption Fine Structure (XAFS) source for Chemical and Spectroscopic Research and Training at the University of Pennsylvania

MRI：宾夕法尼亚大学购买 X 射线吸收精细结构 (XAFS) 源用于化学和光谱研究和培训

• 批准号: 2117783
• 负责人: Daniel Mindiola
• 金额: $ 28.39万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2117783&HistoricalAwards=false
• 关键词: MRI; Acquisition; ray; Absorption; Fine

This award is jointly supported by the Major Research Instrumentation and the Chemistry Research Instrumentation programs. The University of Pennsylvania is acquiring an X-ray absorption fine structure (XAFS) source with synchrotron-quality spectra capabilities to support the research of Professor Daniel Mindiola and colleagues Marisa Kozlowski, Eric Detsi and Neil C. Tomson. This instrument facilitates research in the areas of chemistry, engineering, and materials science. XAFS reveals local structural analysis and collecton information about the unoccupied local electronic states of solid and solution state materials. XAFS is the spectroscopic method of choice for characterizing the structural and electronic properties of new molecules as well as for predicting and explaining resulting reactivity. Spectra reveal information about oxidation state assignments and the degree of covalency in bonding and coordination environments, while allowing for the characterization of bulk material in solid and solution state phases. This instrument enhances the educational, research, and teaching efforts of students at all levels in many departments as well as provides accessibility for use at nearby institutions. The award of the XAFS source is aimed at enhancing research and education at all levels, especially in areas such as chemistry, engineering, and materials science. Research focuses on nitrogen activation by iron compounds; precatalysts, oxidized precatalysts, and isolated reaction species for paramagnetic species; and model surface investigations are pursued. In addition, other investigations include nanomaterial preparation and the study of electrochemical energy storage systems involving nanoporous electrodes, and liquid electrodes. It also assists in the use of electrocatalysts for the reduction of carbon dioxide to carbon-containing organic compounds, the characterization of exsolution-synthesized stable and coking-resistant heterogeneous catalysts, exploration of nickel catalyzed carbon-carbon bond forming reactions, and the study of catalytic systems for energy relevant reactions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项由主要研究仪器和化学研究仪器计划共同支持。宾夕法尼亚大学正在获得一个具有同步加速器质量光谱能力的X射线吸收精细结构（XAFS）源，以支持丹尼尔·明迪奥拉教授及其同事玛丽莎·科兹洛夫斯基、埃里克·德特西和尼尔·C.汤臣该仪器促进了化学、工程和材料科学领域的研究。XAFS揭示了固态和溶液态材料的局域结构分析和收集有关未占据局域电子态的信息。XAFS是表征新分子的结构和电子性质以及预测和解释反应性的光谱方法。光谱揭示了有关氧化态分配和共价键合和配位环境中的程度的信息，同时允许表征固体和溶液状态相的散装材料。该工具增强了许多部门各级学生的教育，研究和教学努力，并提供了在附近机构使用的无障碍环境。XAFS源的奖项旨在加强各级研究和教育，特别是在化学，工程和材料科学等领域。研究重点是氮活化铁化合物;预催化剂，氧化预催化剂，和分离的顺磁性物种的反应物种;和模型表面调查进行。此外，其他研究包括纳米材料制备和涉及纳米多孔电极和液体电极的电化学储能系统的研究。它还有助于使用电催化剂将二氧化碳还原为含碳有机化合物，表征溶出合成的稳定和抗焦化的非均相催化剂，探索镍催化的碳-碳键形成反应，和能源相关反应的催化系统的研究。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的学术价值和更广泛的影响审查标准。