Collaborative Research: Controlling the properties of oxide-encapsulated metals for interfacial catalysis

合作研究：控制氧化物封装金属的界面催化性能

• 批准号: 1900183
• 负责人: Will Medlin
• 金额: $ 26.5万
• 依托单位: University of Colorado at Boulder
• 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: 2019-08-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1900183&HistoricalAwards=false
• 关键词: Collaborative; Research; Controlling; properties; oxide

Solid catalysts play an important role in energy-efficient commercial processes used to produce fuels, chemicals, and energy, and also in pollution mitigation. Most commercial solid catalysts used today consist of metal particles supported on high surface area support materials. Improvements in these catalysts are needed to further improve their efficiency. Successful research in this area results in lower energy consumption and reduced environmental impact of many chemical processes. One approach to this goal is through control of the interfaces between the metal particles and the support materials. In this project, Dr. Nikolla (Wayne State University) and Dr. Medlin (University of Colorado) are developing an understanding these metal/support interfaces with the objective of discovering more active and efficient catalysts. Dr. Nikolla and Dr. Medlin actively engage in outreach activities related to the education of young students, especially those from underrepresented groups. For example, they are developing workshops for underrepresented K-12 female students to enhance their understanding and desire in pursuing higher education in science, technology, engineering, and mathematics (STEM) fields. Dr. Nikolla and Dr. Medlin are also designing activities to inform parents about STEM fields, so that the parents can encourage their children to pursue STEM education.With funding from the Chemical Catalysis Program of the Chemistry Division, Dr. Eranda Nikolla of Wayne State University and Dr. Will Medlin of University of Colorado are developing an understanding of solid metal/metal oxide interfaces in "inverted" catalytic systems with the objective of enhancing catalytic activity and selectivity in chemical reactions. They are synthesizing controlled metal oxide-encapsulated metal nanoparticles (i.e., M@MO structures) with systematic variations in structure and composition of both the metal and metal oxide components. The research team correlates these synthetic variations to the surface chemical properties and catalyst performance. Fundamental insights from experimental model catalysts coupled with advanced characterization and computational studies on inverted catalyst systems are being used to advance the understanding of interfacial chemistry. The encapsulated catalyst systems are also being investigated as a platform for controlling the near-surface environment around the reactive interface through functionalization of the oxide pores with organic ligands. Dr. Nikolla and Dr. Medlin are actively engaged with educational and research outreach activities aimed at inspiring and informing undergraduate and K-12 female students from underrepresented groups regarding STEM fields and research in the area of catalysis.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.

固体催化剂在生产燃料、化学品和能源的高能效商业过程中发挥着重要作用，在减轻污染方面也发挥着重要作用。今天使用的大多数商用固体催化剂是由负载在高比表面积载体材料上的金属颗粒组成的。需要对这些催化剂进行改进，以进一步提高其效率。在这一领域的成功研究降低了能源消耗，减少了许多化学过程对环境的影响。实现这一目标的一种方法是通过控制金属颗粒和载体材料之间的界面。在这个项目中，韦恩州立大学的尼古拉博士和科罗拉多大学的梅德林博士正在开发一种理解这些金属/载体界面的方法，目的是发现更活性和更高效的催化剂。尼古拉博士和梅德林博士积极参与与年轻学生教育有关的外联活动，特别是那些来自代表人数不足的群体的学生。例如，他们正在为代表不足的K-12女学生举办讲习班，以增强她们在科学、技术、工程和数学(STEM)领域接受高等教育的理解和愿望。尼古拉博士和梅德林博士还在设计活动，让家长了解STEM领域，这样家长就可以鼓励他们的孩子接受STEM教育。在化学系化学催化项目的资助下，韦恩州立大学的埃兰达·尼古拉博士和科罗拉多大学的威尔·梅德林博士正在发展对固体金属/金属氧化物界面的理解，目的是提高催化活性和化学反应中的选择性。他们正在合成金属氧化物包裹的受控金属纳米颗粒(即M@MO结构)，金属和金属氧化物成分的结构和组成都有系统的变化。研究小组将这些合成变化与表面化学性质和催化剂性能联系起来。来自实验模型催化剂的基本见解，加上对倒置催化剂系统的高级表征和计算研究，正在被用来促进对界面化学的理解。通过有机配位体对氧化孔进行功能化，还研究了包埋催化剂系统，作为控制反应界面周围近表面环境的平台。尼古拉博士和梅德林博士积极参与教育和研究推广活动，旨在激励和告知来自代表性不足群体的本科生和K-12女性学生关于STEM领域和催化剂领域的研究。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Scalable synthesis of selective hydrodeoxygenation inverted Pd@TiO2 nanocatalysts

• DOI: 10.1007/s41981-021-00171-4
• 发表时间: 2021-05
• 期刊: Journal of Flow Chemistry
• 影响因子: 2.7
• 作者: Pinaki Ranadive;Zachary Blanchette;Alexander P. Spanos;J. Medlin;N. Brunelli

Reactivity of Pd–MO 2 encapsulated catalytic systems for CO oxidation

Pd-MO 2 封装催化体系对 CO 氧化的反应活性

• DOI: 10.1039/d1cy01916c
• 发表时间: 2022
• 期刊: Catalysis Science & Technology
• 影响因子: 5
• 作者: Paz Herrera, Laura;Freitas de Lima e Freitas, Lucas;Hong, Jiyun;Hoffman, Adam S.;Bare, Simon R.;Nikolla, Eranda;Medlin, J. Will
• 通讯作者: Medlin, J. Will