Collaborative Research: Tailoring the Catalytic Properties of Pd Single Atoms Using Covalent Organic Frameworks
合作研究:利用共价有机框架定制 Pd 单原子的催化性能
基本信息
- 批准号:2308630
- 负责人:
- 金额:$ 34.37万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-06-15 至 2026-05-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Catalysts are used widely in industrial processes to improve energy efficiency and direct chemical reactions toward desired products. The project examines novel catalyst designs for an important class of industrial reactions – selective hydrogenations - used for many applications such as the production of plastics, fragrances and pharmaceuticals. The precious metal palladium (Pd) is widely used for selective hydrogenation reactions. The project aims to maximize utilization of the precious metal in the form of isolated atoms, and tailor their properties by anchoring them to covalent organic frameworks (COFs), which are highly crystalline porous materials with specific binding sites for the metal atoms. The investigators will synthesize and characterize the catalysts using a suite of laboratory- and synchrotron-based characterization techniques. The catalysts will be tested for the selective hydrogenation of acetylene to ethylene to determine how the binding sites affect the activity and selectivity of the Pd atoms. Beyond the research, the project involves education of graduate and undergraduate students with cross-training of researchers between the two institutions and focused efforts to increase participation of underrepresented groups in catalysis science.The project aims to tailor the properties of Pd single atoms using covalent organic frameworks (COF) as the support/ligand, and thus circumvent trade-offs between activity and selectivity associated with traditional metal oxide supported nanoparticle catalysts for the semi-hydrogenation of ethylene. Areas of focus include 1) the effects of the COF binding sites and secondary ligands on the Pd electronic properties, 2) hydrogen activation, 3) binding with adsorbates and 4) catalyst activity/selectivity. Those thrusts will be accomplished through precise catalyst synthesis, advanced characterization techniques (in-situ/operando X-ray spectroscopies, microcalorimetry) and detailed kinetic measurements. The project will identify the possibilities and limitations for designing catalysts based on Pd metal single atoms. The interdisciplinary nature of this research, and the integration of research and education plans will lead to a cadre of students obtaining a unique educational experience on heterogeneous catalysis and advanced lab- and synchrotron-based characterization techniques.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.
催化剂广泛应用于工业过程中,以提高能源效率和指导化学反应产生所需的产物。该项目为一类重要的工业反应——选择性氢化反应——研究新型催化剂的设计,选择性氢化反应用于许多应用,如塑料、香水和药品的生产。贵金属钯(Pd)广泛用于选择性加氢反应。该项目旨在最大限度地利用孤立原子形式的贵金属,并通过将它们锚定在共价有机框架(COFs)上来定制它们的性质,COFs是一种高度结晶的多孔材料,具有金属原子的特定结合位点。研究人员将使用一套基于实验室和同步加速器的表征技术合成和表征催化剂。将对催化剂进行乙炔选择性加氢成乙烯的测试,以确定结合位点如何影响Pd原子的活性和选择性。除了研究之外,该项目还包括对研究生和本科生的教育,在两个机构之间交叉培训研究人员,并重点努力增加代表性不足的群体参与催化科学。该项目旨在使用共价有机框架(COF)作为支撑/配体来调整Pd单原子的性质,从而避免传统金属氧化物支撑的纳米颗粒催化剂在乙烯半加氢过程中的活性和选择性之间的权衡。重点领域包括:1)COF结合位点和二级配体对Pd电子性质的影响;2)氢活化;3)与吸附物的结合;4)催化剂活性/选择性。这些推力将通过精确的催化剂合成、先进的表征技术(原位/operando x射线光谱、微热法)和详细的动力学测量来完成。该项目将确定基于钯金属单原子设计催化剂的可能性和局限性。这项研究的跨学科性质,以及研究和教育计划的整合,将使一群学生在多相催化和先进的实验室和基于同步加速器的表征技术方面获得独特的教育经验。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识价值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
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Ayman Karim其他文献
Wall coating behavior of catalyst slurries in non-porous ceramic microstructures
- DOI:
10.1016/j.ces.2006.04.029 - 发表时间:
2006-09-01 - 期刊:
- 影响因子:
- 作者:
Travis Conant;Ayman Karim;Stephen Rogers;Stephen Samms;Gerard Randolph;Abhaya Datye - 通讯作者:
Abhaya Datye
Ayman Karim的其他文献
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{{ truncateString('Ayman Karim', 18)}}的其他基金
Collaborative Research: Structure, Dynamics, and Catalysis with Dilute Bimetallic and Single Atom Alloy Nanoparticles
合作研究:稀双金属和单原子合金纳米粒子的结构、动力学和催化作用
- 批准号:
2300021 - 财政年份:2023
- 资助金额:
$ 34.37万 - 项目类别:
Standard Grant
Collaborative Research: DMREF: Atomically precise catalyst design for selective bond activation
合作研究:DMREF:用于选择性键激活的原子精确催化剂设计
- 批准号:
2323699 - 财政年份:2023
- 资助金额:
$ 34.37万 - 项目类别:
Standard Grant
Atomic Scale Design of Nanostructures Using In Situ Characterization-Based Kinetic Models
使用基于原位表征的动力学模型进行纳米结构的原子尺度设计
- 批准号:
1507370 - 财政年份:2015
- 资助金额:
$ 34.37万 - 项目类别:
Standard Grant
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