Gas Phase Ion Chemistry of PAHs and Giant PAHs: Models for Graphene Interactions and Supported Catalysis

PAH 和巨型 PAH 的气相离子化学：石墨烯相互作用和支持催化模型

• 批准号: 1463989
• 负责人: Mohamed Samy El-Shall
• 金额: $ 42.04万
• 依托单位: Virginia Commonwealth University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-01 至 2021-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1463989&HistoricalAwards=false
• 关键词: Gas; Phase; Ion; Chemistry; PAHs

With this award, the Chemical Structure, Dynamics and Mechanisms (CSDM-A) Program of the Division of Chemistry is funding Professors Samy El-Shall and Michael Mautner of Virginia Commonwealth University and Professor Samuel Abrash of the University of Richmond to investigate the structure and reactivity of complex organic molecular ions in the gas phase. The systems will be studied with a variety of mass spectrometry methods. Specific systems to be studied include polycyclic aromatic hydrocarbon (PAH) ions as well as Pd-graphene catalysts for polymerization of acetylene. In an educational project supported by this award, Prof. El-Shall is developing curriculum to expand graduate education in chemistry to areas at the intersection of science and public policy. The students supported with this award will come from a diverse group of students from both Virginia Commonwealth University as well as undergraduate students the University of Richmond. With support from this award, Prof. El-Shall will work to develop new curriculum, based partly upon his recent experiences as a Jefferson Science Fellow with the US Department of State, to highlight the ways in which science and technology can inform public policy.Professor Samy El-Shall and his research group will study an interesting group of chemical systems. In one set of experiments, Dr. El-Shall and his group will extend their past work on the chemical properties of polycyclic aromatic hydrocarbon (PAH) and polycyclic aromatic nitrogen heterocycle (PANH) ions. These ions are implicated in a number of contexts: from interstellar space to potential intermediates in the formation of graphene and soot. In the next phase of research on these systems, the El-Shall group will study: (1) the reactivity of small PAH and PANH ions with small unsaturated and polar molecules; (2) the reactions of protonated PAHs; (3) the structure and energetics of dimer ions of PAH and PANH compounds; (4) the molecular properties and ion chemistry of so-called "giant" PAH compounds, containing hundreds of carbon atoms; and (5) related chemistry on the polymerization of acetylene with Pd in the gas phase. The experimental methods that will be used revolve around variations of mass-selected ion mobility measurements in specialized equipment in the El-Shall laboratory.

化学系的化学结构、动力学和机理(CSDM-A)项目将资助弗吉尼亚联邦大学的Samy El-Hill和Michael Mautner教授以及里士满大学的Samuel Abrash教授研究复杂有机分子离子在气相中的结构和反应性。这些系统将用各种质谱学方法进行研究。要研究的具体体系包括多环芳烃(PAH)离子以及用于乙炔聚合的Pd-石墨烯催化剂。在该奖项支持的一个教育项目中，El-Share教授正在开发课程，将化学研究生教育扩展到科学和公共政策的交叉领域。获得该奖项支持的学生将来自弗吉尼亚联邦大学和里士满大学的本科生。在这个奖项的支持下，El-Hare教授将致力于开发新的课程，部分基于他最近在美国国务院担任杰斐逊科学研究员的经验，以突出科学技术可以为公共政策提供信息的方式。Samy El-Hell教授和他的研究小组将研究一组有趣的化学系统。在一组实验中，埃尔-希尔博士和他的团队将扩展他们过去在多环芳烃(PAH)和多环芳香氮杂环(PAH)离子的化学性质方面的工作。这些离子与许多环境有关：从星际空间到石墨烯和烟尘形成的潜在中间体。在对这些体系的下一阶段研究中，EL-HAN小组将研究：(1)多环芳烃和多环芳烃小离子与不饱和小分子和极性小分子的反应性；(2)质子化多环芳烃的反应；(3)多环芳烃和多环芳烃化合物二聚体离子的结构和能量；(4)含有数百个碳原子的所谓“巨型”多环芳烃化合物的分子性质和离子化学；以及(5)乙炔与钯在气相中聚合的相关化学。将使用的实验方法围绕着EL-HAN实验室专门设备中质量选择的离子迁移率测量的变化。