| 项目编号: | 1554112
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| 项目名称: | CAREER: Supports as steric and electronic modifiers of catalysis at single atom metal active sites |
| 作者: | Phillip Christopher
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| 承担单位: | University of California-Riverside
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| 批准年: | 2016
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| 开始日期: | 2016-04-01
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| 结束日期: | 2021-03-31
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| 资助金额: | 500000
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
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| 英文关键词: | metal atom catalyst
; successful technical career
; rh atom
; atom site
; single-metal-atom homogeneous catalyst
; active noble metal
; phillippromoting catalytic reaction via isolated metal atomssupported metal catalyst
; stability
; noble metal
; metal atom
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| 英文摘要: | 1554112
Christopher, Phillip
Promoting Catalytic Reactions Via Isolated Metal Atoms
Supported metal catalysts, especially those utilizing expensive noble metals such as rhodium (Rh), are often most effectively utilized when the noble metal is dispersed as extremely small particles - and in the limit as isolated metal atoms. This study examines at a fundamental level how interactions between the supporting oxide material and the active noble metal can be engineered to control the stability and activity of isolated Rh atoms. Insights from the work will be used to design catalysts with high selectivity in propylene hydroformylation - an important industrial reaction currently operated under homogeneous liquid-phase catalytic conditions. A heterogeneous, gas-phase analog - as sought here - would offer a lower cost, environmentally friendly alternative. Additionally, the research will provide opportunities for a broadly diverse student body at UC Riverside to develop both the analytical and communication skills needed for successful technical careers.
The project focuses on controlling the selectivity, reactivity, and stability of isolated metal atom catalysts by varying the oxide support and by functionalizing the support with organosilane moieties in ways that create electronic and steric structures that replicate those of single-metal-atom homogeneous catalysts. Central to the study are a host of techniques involving synthesis, in-situ catalyst transformations, and analytical methods that will be utilized to create, confirm, and characterize the isolated atom sites and control their activity and stability. Fundamental experiments will be carried out using probe molecule spectroscopy, probe reaction kinetics, in-situ spectroscopy and microscopy, and density functional theory calculations. While the immediate focus will be on propylene hydroformylation, the associated fundamental understanding will benefit society through the design of heterogeneous catalytic processes that are more energy and environmentally friendly than homogeneous processes. The highly multidisciplinary nature of the project will provide plentiful opportunities for students at this Hispanic serving institution to develop skills in presenting technical information based on carefully reasoned and structured scientific arguments. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/92558
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Phillip Christopher. CAREER: Supports as steric and electronic modifiers of catalysis at single atom metal active sites. 2016-01-01.
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