EAGER: Electronic Modulation of Binding and Catalysis on Metal-Oxides: CO Oxidation on NiO

EAGER：金属氧化物结合和催化的电子调节：NiO 上的 CO 氧化

• 批准号: 1937641
• 负责人: Paul Dauenhauer
• 金额: $ 20万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1937641&HistoricalAwards=false
• 关键词: EAGER; Electronic; Modulation; Binding; Catalysis

Catalysts are key materials used to accelerate and improve the energy efficiency of many processes for manufacturing fuels and chemicals. The project investigates a new concept - dynamic catalyst modulation - for further accelerating the rates of catalytic reactions, with corresponding improvements in energy utilization and reduced capital costs of process equipment. If successful, the concept is potentially applicable to a wide range of industrial catalytic processes. The investigators will incorporate the principles of dynamic catalyst modulation into various educational media.The catalytic activity of materials is dictated by the binding energetics of key reaction intermediates, described through energy scaling relationships, which predicts a maximum in the catalytic activity - characterized by the well-known Sabatier principle - achievable only through material design. The study will investigate the extent to which field-effect modulation can be used to induce periodic oscillations in applied potential, on the timescale of turnover events, that alter the binding energetics of nickel oxide catalyst films on back-gated devices. Operating catalysts under a constantly oscillating applied potential, where binding energetics of reaction intermediates are constantly changing, allows a single catalyst to mimic the performance of multiple materials in a periodic fashion. Altering the Fermi level will allow for the design of catalysts that break past the current limitations imposed by scaling relationships, to reach unprecedented levels of catalytic activity. The variation in binding energy of a carbon monoxide and oxygen on nickel oxide model system as a function of temperature and back-gate voltage will be characterized to determine carbon monoxide oxidation kinetics as a function of back gate voltage at steady state and oscillatory conditions.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.

催化剂是用于加速和提高燃料和化学品制造过程的能源效率的关键材料。该项目研究了一种新概念--动态催化剂调节--以进一步加快催化反应速率，从而相应提高能源利用率并降低工艺设备的资本成本。 如果成功的话，这个概念可能适用于广泛的工业催化过程。 研究人员将把动态催化剂调节的原理融入到各种教育媒体中。材料的催化活性由关键反应中间体的结合能决定，通过能量标度关系描述，该关系预测催化活性的最大值-其特征在于众所周知的Sabatier原理-只能通过材料设计实现。该研究将调查场效应调制可以在多大程度上用于诱导周期性振荡的施加电位，营业额事件的时间尺度上，改变背栅设备上的氧化镍催化剂膜的结合能。 在不断振荡的外加电势下操作催化剂，其中反应中间体的结合能不断变化，允许单一催化剂以周期性方式模拟多种材料的性能。改变费米能级将使催化剂的设计突破目前由标度关系所施加的限制，达到前所未有的催化活性水平。本文研究了一氧化碳和氧在氧化镍模型体系上的结合能随温度和背散射的变化。栅极电压将被表征，以确定一氧化碳氧化动力学，作为稳态和振荡条件下背栅极电压的函数。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查进行评估，被认为值得支持的搜索.