Fundamental Studies of the Origin of Support Effects in Supported Monolayer Vanadia Catalysts

负载型单层氧化钒催化剂负载效应起源的基础研究

• 批准号: 0139613
• 负责人: John Vohs
• 金额: $ 28.64万
• 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: 2002
• 资助国家: 美国
• 起止时间: 2002-04-01 至 2006-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0139613&HistoricalAwards=false
• 关键词: Fundamental; Studies; Origin; Support; Effects

AbstractProposal Title: Fundamental Studies of the Origin of Support Effects in Supported Monolayer Vanadia CatalystsProposal Number: CTS-0139613Principal Investigator: John VohsInstitution: University of PennsylvaniaThe objective of this project is to provide a more detailed fundamental understanding of support effects on monolayer vanadia catalysts. Specific goals of the investigations of this system are to provide quantitative information on the nature of the bonding at the vanadia-support interface. The methods by which the identity of the support influences the strengths and redox properties of V-O support bonds will be studied. Reactivity of the catalytic surface will be characterized through a study of kinetic parameters for elementary surface reactions involved in the selective oxidation of alcohols. The model catalytic systems studied will consist of vapor deposited vanadia films supported on the surfaces of metal oxide single crystals. Surface sensitive spectroscopic techniques including high-resolution electron energy loss spectroscopy (HREELS), x-ray photoelectron spectroscopy (XPS), and temperature programmed desorption (TPD), among others will be used to characterize the catalytic surface and the chemical species on the surface. Supported metal oxides are used industrially for a variety of chemical processes including selective oxidations and the catalytic reduction of NOx, and this study may lead to improved methods for the production of catalytic materials.

摘要提案标题：负载型单层氧化钒催化剂中负载效应起源的基础研究提案编号：CTS-0139613主要研究员：John Vohs机构：宾夕法尼亚大学该项目的目的是提供对单层氧化钒催化剂负载效应的更详细的基础了解。 该系统研究的具体目标是提供有关氧化钒-载体界面处键合性质的定量信息。 将研究载体的特性影响 V-O 载体键的强度和氧化还原性能的方法。 催化表面的反应性将通过研究醇选择性氧化中涉及的基本表面反应的动力学参数来表征。 研究的模型催化系统将由支撑在金属氧化物单晶表面上的气相沉积氧化钒薄膜组成。 表面敏感光谱技术，包括高分辨率电子能量损失光谱（HREELS）、X射线光电子能谱（XPS）和程序升温解吸（TPD）等，将用于表征催化表面和表面化学物质。 负载型金属氧化物在工业上用于各种化学过程，包括选择性氧化和氮氧化物的催化还原，这项研究可能会改进催化材料的生产方法。