Computational and Experimental Study of Oxygenated Hydrocarbon Fuel Chemistry in Non-premixed Flames
非预混火焰中含氧烃燃料化学的计算和实验研究
基本信息
- 批准号:1133211
- 负责人:
- 金额:$ 32.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2011
- 资助国家:美国
- 起止时间:2011-10-01 至 2014-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1133211PfefferleIntellectual Merit: Plants are about 50 % oxygen by weight. Thus as society inevitably moves from fossil fuels towards renewable fuels, the oxygen content of combustion fuels will increase. The presence of oxygenated hydrocarbons in the fuel introduces important combustion science and public health issues that are addressed by the proposed research. First, oxygenates may reduce emissions of soot particles. Second, they can also increase emissions of other toxic combustion byproducts such as aldehydes. In order to rationally optimize soot reductions while minimizing air toxics emissions, we need to understand the chemical mechanisms of fuel decomposition and aromatic hydrocarbon formation for oxygenates. The number of oxygenates that can be made from vegetation is large, and the sooting tendencies and fuel decomposition products vary greatly as a function of oxygenate structure; thus strictly empirical approaches for choosing among them are not reliable. A strategy that analyzes a large number of oxygenated fuels and leads to methods that can predict mechanisms and reactivity from fuel structure is needed. Although the combustion chemistry of hydrocarbons and some small oxygenates has been widely studied, little is known for most oxygenated hydrocarbons. We propose a novel approach that is based on rapid, on-line species measurements and computational simulations in co-flow flames where a small amount of the oxygenated fuel is added to a base fuel of methane. The base methane flame is has been well characterized and computations provide good agreement with experimental species measurements. Our strategy involving perturbation of a well-characterized system enables high-quality measurements and also facilitates simulations because the solutions from previously computed base methane flames can be used as a starting estimate for all of the doped flames. Importantly, our methods compare the fate of oxygenated fuel species under identical flame conditions emphasizing differences in chemical mechanisms over other factors.In earlier work we validated this methodology for regular hydrocarbons including heptanes, hexenes, hexadienes, cycloalkanes and aromatics. Here we will extend it to 100+ oxygenated hydrocarbons with up to 20 carbon atoms. Our results will provide an important comparison to other studies of oxygenates combustion chemistry, most of which use premixed flames and a limited number of oxygenated fuel structures. The analysis of a wide range of structures is required for development of structure/reactivity relationships allowing robust mechanism testing and a rational basis for oxygenated fuel selection to optimize emissions benefits.Broader Impacts: Our work sets the stage for cleaner engine design and renewable fuels utilization by expanding the database to oxygenated hydrocarbons, and by providing rational correlation and extrapolation data for the effect of fuel structure on soot production and possible toxic oxygenated emissions. We will collaborate with local industry to facilitate this. We have provided detailed results from our previous studies to numerous groups around the world who have used them to test computational models. The databases generated here will be archived for direct access to researchers around the world. Undergraduate students have participated in our previous research and will perform laboratory modules related to this project. We will also involve students from local non-PhD granting colleges and high schools in our work and helping them develop research projects at their home institutions and to interest them in continuing study in the sciences.
1133211PFEFFERFERLEINTLECTUAL FEARIT:植物的重量约为50%的氧气。 因此,随着社会不可避免地从化石燃料转向可再生燃料,燃烧燃料的氧含量将增加。 燃料中的氧化碳氢化合物的存在引入了拟议的研究解决的重要燃烧科学和公共卫生问题。 首先,氧化物可以减少烟灰颗粒的排放。 其次,它们还可以增加其他有毒燃烧副产物(如醛)的排放。 为了合理地优化烟灰的减少,同时最大程度地减少了空气毒物的排放,我们需要了解燃料分解的化学机制和芳族烃的形成。可以用植被制成的氧化物数量很大,而烟雾趋势和燃料分解产物的变化差异很大,这是氧化结构的函数。因此,在其中进行严格的经验方法是不可靠的。需要分析大量氧化燃料的策略,并导致可以预测燃料结构的机制和反应性的方法。尽管碳氢化合物和一些小氧化酸盐的燃烧化学已被广泛研究,但对于大多数氧化烃而言,鲜为人知。 我们提出了一种新的方法,该方法基于共同流火焰中快速的,在线物种的测量和计算模拟,其中将少量的含氧燃料添加到甲烷的碱燃料中。基础甲烷火焰的表征很好,计算与实验物种测量值良好。 我们涉及良好特征系统扰动的策略可以实现高质量的测量,并促进模拟,因为先前计算的基础甲烷火焰的溶液可以用作所有掺杂火焰的起始估计。重要的是,我们的方法比较了在相同的火焰条件下,强调化学机制在其他因素上的差异的命运。在这里,我们将其扩展到具有多达20个碳原子的100多种氧化烃。我们的结果将与其他氧化燃烧化学的研究提供重要的比较,其中大多数使用预混合火焰和有限数量的氧化燃料结构。 建立结构/反应性关系需要进行多种结构的分析,从而允许稳健的机制测试以及含氧燃料选择的合理基础,以优化排放效果。BROADER的影响:我们的工作为清洁发动机设计和可再生燃料利用而通过为燃料型的植入型植入和燃料的生产而扩展效应的效果,并为植入型的生效造型,并为植入型的生效造型而进行,并为燃料的生产效应提供了额外的发展。并可能有毒的氧化排放。我们将与当地行业合作,以促进这一点。 我们已经为世界各地的众多小组提供了使用它们来测试计算模型的详细结果。 此处生成的数据库将被存档,以直接访问世界各地的研究人员。本科生已经参加了我们以前的研究,并将执行与该项目相关的实验室模块。我们还将让来自当地非PHD授予大学和高中的学生参与我们的工作,并帮助他们在本机构开发研究项目,并让他们感兴趣,以继续在科学领域进行研究。
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)

暂无数据
数据更新时间:2024-06-01
Lisa Pfefferle其他文献
Pd on low-sureace-area α-alumina system: Is metallic Pd active for methane combustion?
- DOI:10.1016/s0082-0784(96)80404-810.1016/s0082-0784(96)80404-8
- 发表时间:1996-01-011996-01-01
- 期刊:
- 影响因子:
- 作者:Maxim Lyubovsky;Robert Weber;Lisa PfefferleMaxim Lyubovsky;Robert Weber;Lisa Pfefferle
- 通讯作者:Lisa PfefferleLisa Pfefferle
Sooting tendencies of diesel fuel component mixtures follow a linear mixing rule
柴油燃料成分混合物的烟灰倾向遵循线性混合规则
- DOI:10.26434/chemrxiv-2022-xrgnf10.26434/chemrxiv-2022-xrgnf
- 发表时间:20222022
- 期刊:
- 影响因子:5
- 作者:Zhanhong Xiang;Karnsiree Chen;C. McEnally;Lisa PfefferleZhanhong Xiang;Karnsiree Chen;C. McEnally;Lisa Pfefferle
- 通讯作者:Lisa PfefferleLisa Pfefferle
共 2 条
- 1
Lisa Pfefferle的其他基金
Collaborative Research: Scalable Separation of Single Walled Carbon Nanotubes
合作研究:单壁碳纳米管的可扩展分离
- 批准号:12646981264698
- 财政年份:2013
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Continuing GrantContinuing Grant
NSF/DOE Partnership on Advanced Combustion Engines: Sooting Behavior of Conventional and Renewable Diesel-Fuel Compounds and Mixtures
NSF/DOE 先进内燃机合作伙伴关系:传统和可再生柴油燃料化合物和混合物的烟灰行为
- 批准号:12586541258654
- 财政年份:2013
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Continuing GrantContinuing Grant
SOLAR: Novel Nanomaterials and Mathematical Analysis for Ultra-High Efficiency Photovoltaic Systems: A New Paradigm in Solar Cells
太阳能:超高效光伏系统的新型纳米材料和数学分析:太阳能电池的新范例
- 批准号:09345200934520
- 财政年份:2009
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Continuing GrantContinuing Grant
Fuel Decomposition and Aromatic Formation Pathways for the Hydrocarbons Contained in Liquid Combustion Fuels
液体燃烧燃料中所含碳氢化合物的燃料分解和芳香形成途径
- 批准号:07563030756303
- 财政年份:2008
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Continuing GrantContinuing Grant
Collaborative Research: Diameter and Chirality Control and Regrowth of Single-Walled Carbon Nanotubes
合作研究:单壁碳纳米管的直径和手性控制以及再生
- 批准号:08287710828771
- 财政年份:2008
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Standard GrantStandard Grant
Fuel Decomposition and Aromatic Formation Pathways for the Hydrocarbons Contained in Liquid Combustion Fuels
液体燃烧燃料中所含碳氢化合物的燃料分解和芳香形成途径
- 批准号:04574520457452
- 财政年份:2005
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Continuing GrantContinuing Grant
SGER: Templated Synthesis of Boron Nanostructures
SGER:硼纳米结构的模板合成
- 批准号:03352180335218
- 财政年份:2003
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Standard GrantStandard Grant
GC-MS for Catalysis, Combustion and Nanotechnology Research and Student Training
用于催化、燃烧和纳米技术研究和学生培训的 GC-MS
- 批准号:02142110214211
- 财政年份:2002
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Standard GrantStandard Grant
Formation of Toxic Combustion Byproducts and Soot
有毒燃烧副产品和烟灰的形成
- 批准号:01217650121765
- 财政年份:2002
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Continuing GrantContinuing Grant
Aromatic Compound and Soot Precursor Formation in Diffusion Flames
扩散火焰中芳香族化合物和烟灰前体的形成
- 批准号:97142229714222
- 财政年份:1998
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:Continuing GrantContinuing Grant
相似国自然基金
计算实验视角下的限价订单簿建模——基于深度学习的理性预期均衡方法
- 批准号:72371184
- 批准年份:2023
- 资助金额:41 万元
- 项目类别:面上项目
量子机器学习算法的设计与实现研究
- 批准号:11905294
- 批准年份:2019
- 资助金额:23.0 万元
- 项目类别:青年科学基金项目
组织学习过程下的组织惯例演化:对现象、路径及微观机制的研究
- 批准号:71902130
- 批准年份:2019
- 资助金额:17.0 万元
- 项目类别:青年科学基金项目
面向计算机系统教学的在线学习环境构建与教学方法研究
- 批准号:61877035
- 批准年份:2018
- 资助金额:45.0 万元
- 项目类别:面上项目
高频交易对证券市场的影响--基于市场微观结构的视角
- 批准号:71771171
- 批准年份:2017
- 资助金额:49.0 万元
- 项目类别:面上项目
相似海外基金
Accelerating drug discovery via ML-guided iterative design and optimization
通过机器学习引导的迭代设计和优化加速药物发现
- 批准号:1055232510552325
- 财政年份:2023
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:
Functional, structural, and computational consequences of NMDA receptor ablation at medial prefrontal cortex synapses
内侧前额皮质突触 NMDA 受体消融的功能、结构和计算后果
- 批准号:1067704710677047
- 财政年份:2023
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:
Defining the shared transcriptional network underlying Toxoplasma extracellular stress and stage transition
定义弓形虫细胞外应激和阶段转变背后的共享转录网络
- 批准号:1068213410682134
- 财政年份:2023
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:
Molecular dissection of extrachromosomal DNA formation, development, and evolution
染色体外 DNA 形成、发育和进化的分子解剖
- 批准号:1064052010640520
- 财政年份:2023
- 资助金额:$ 32.5万$ 32.5万
- 项目类别:
Joint Estimate Diffusion Imaging (JEDI) for improved Tissue Characterization and Neural Connectivity in Aging and Alzheimer's Disease
联合估计扩散成像 (JEDI) 可改善衰老和阿尔茨海默病的组织表征和神经连接
- 批准号:1066291110662911
- 财政年份:2023
- 资助金额:$ 32.5万$ 32.5万
- 项目类别: