| 项目编号: | 1508048
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| 项目名称: | UNS: Mechanistic Studies of Hydrodeoxygenation of Lignin-Derived Aromatic Oxygenates over Bimetallic Catalysts |
| 作者: | John Vohs
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| 承担单位: | University of Pennsylvania
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| 批准年: | 2014
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| 开始日期: | 2015-09-15
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| 结束日期: | 2018-08-31
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| 资助金额: | USD330000
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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: | bimetallic catalyst
; aromatic compound
; study
; catalyst
; aromatic oxygenate
; role
; lignin-based biomass
; aromatic ring
; oxyphilic metal
; catalyst surface
; single crystal study
|
| 英文摘要: | 1508048
Vohs, John M.
Bio-refining of lignin-based biomass results in production of oxygenated aromatic compounds that must be further processed by hydrodeoxygenation (HDO) to produce higher-value aromatic compounds. The study will involve molecular-level investigation of the adsorption and reaction of several oxygenated aromatics on bimetallic catalysts ranging from single crystals to supported catalysts. The resulting insight will aid the discovery and development of catalysts that convert oxygenated aromatic compounds to useful fuels and chemicals. The work will also train students at both the undergraduate and graduate levels in skills relevant to the realization of a sustainable energy and environmental future.
Bimetallic catalysts composed of a group-10 metal (Ni, Pd, Pt) and a second more oxyphilic metal, such as Fe or Zn, will be chosen based on previous demonstration of HDO activity in aldehyde and aldose HDO. Specifically, the proposal will investigate how changes in the metal d-band resulting from the addition of a second more oxyphilic metal (e.g., Fe or Zn) influence the interaction of aromatic rings with the catalyst surface and the role this plays in decreasing overall activity for undesirable ring hydrogenation. The study will also examine the role of the oxyphilic metal in providing specific binding sites for the oxygen atoms in the aromatic oxygenates and the role of these sites in facilitating C-O bond cleavage in HC=O, C-OH, and C-O-C groups. In addition to the single crystal studies, high-surface-area supported bimetallic catalysts will be prepared and subjected to spectroscopic characterization of adsorbed species, and evaluated in a gas-phase flow-reactor to obtain reaction kinetics and selectivity to desired products.
The proposal clearly addresses a critical step (HDO) in the overall biomass refining scheme. As such, it will provide fundamental insight that will aid the development of biomass refining schemes and thereby move lignocellulosic biomass conversion closer to an economically realizable process, with attendant benefits for renewable energy and chemicals. The project will also train both graduate and undergraduate students in the fields of energy conversion, heterogeneous catalysis, and reaction engineering - skills highly sought by the U.S. petrochemical industry. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93278
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
John Vohs. UNS: Mechanistic Studies of Hydrodeoxygenation of Lignin-Derived Aromatic Oxygenates over Bimetallic Catalysts. 2014-01-01.
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