Engineering Research Equipment: Mossbauer Spectrometer withMagnetic Resolution for Catalysis/Coal Mineral Research

工程研究设备：用于催化/煤矿物研究的具有磁分辨率的穆斯堡尔谱仪

• 批准号: 9212479
• 负责人: Calvin Bartholomew
• 金额: $ 4.08万
• 依托单位: Brigham Young University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-01 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9212479&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Mossbauer; Spectrometer

A major upgrade of an existing Mossbauer spectrometer is performed. Electronics are updated and a controlled atmosphere, variable-temperature cell with in situ reaction capability is fabricated; the cell is designed to be placed between the poles of a 5-inch electromagnet to provide a magnetic field up to 11 kilogauss. It is thought that this is the most versatile Mossbauer facility in the U. S. The equipment will be used for several studies in catalysis and coal chemistry including studies of electronic, magnetic, and lattice properties of supported metal clusters; active phases of cobalt and iron catalysts during hydrogenation of carbon monoxide; surface and bulk characteristics of zeolites exchanged with iron or cobalt, and their correlation with activity for decomposition of nitric oxide; transformations of iron minerals during coal devolatilization, char oxidation, and the deposition of mineral matter on boiler surfaces; and iron compounds in fly ash.

对现有的穆斯堡尔光谱仪进行了重大升级。更新了电子设备，制造了具有原位反应能力的可控气氛变温电池；电池被设计放置在一个5英寸的电磁铁的两极之间，以提供高达11千高斯的磁场。据认为，这是美国最通用的穆斯堡尔设施，该设备将用于催化和煤化学的多项研究，包括研究支撑金属团簇的电子、磁性和晶格性质；一氧化碳加氢过程中钴和铁催化剂的活性相与铁或钴交换的沸石的表面和体积特性及其与一氧化氮分解活性的关系煤脱挥发、炭氧化和矿物在锅炉表面沉积过程中铁矿物的转化；粉煤灰中的铁化合物。